Publikationen

2023

436. Stenger, L., Große Hovest, A., Nguyen, T. Q., Pham, C. T., Rauhaus, A., Le, M. D., Rödder, D. & T. Ziegler (2023) Assessment of the threat status of reptile species from Vietnam - Implementation of the One Plan Approach to Conservation. - Nature Conservation 53: 183–221.
435. Ngo, H. T., McCormack, T. E. M., Hoang, H. V., Nguyen, T. T., Tapley, B., Le, M. H., Le, D. T., Nguyen, T. T., Trinh, H. L. T., Ziegler, T., Nguyen, T. Q. & M. D. Le (2023): Genetic Diversity of the Critically Endangered Big-Headed Turtle (Platysternon megacephalum) Based on Wild and Traded Samples: Implications for Conservation. - Diversity 2023, 15, 958, 14 pp. https://doi.org/10.3390/d15090958
434. Ginal, P., Stahlberg, J., Rauhaus, A., Wagner, P., Rödder, D. & T. Ziegler (2023): Threatened turtles and tortoises (Testudines) in zoos: A ZIMS database analysis for improved One Plan Approach to Conservation actions. - Salamandra 59(3): 262–274.
433. Ngo, H. N., Phan, T. Q., Hoang, C. V., Nguyen, H. Q., Gewiss, L. R., Nguyen, T. Q., Ziegler, T. & C. T. Pham (2023): Do not leave understudied species behind: Ecological adaptations, demography, and threat analysis of an endemic Gekko species in northern Vietnam for conservation purposes. - Salamandra 59(3): 207–216.
432. Rech, I., Ginal, P., Rauhaus, A., Ziegler, T. & D. Rödder (2023): Geckos in zoos: A global approach on distribution patterns of threatened geckos (Gekkota) in zoological institutions. – Journal for Nature Conservation 75(2023): 1-13.
431. Phung, T. M., Pham, C. T., Nguyen, T. Q., Ninh, H. T., Nguyen, H. Q., Bernardes, M., Le, S. T., Ziegler, T. & T. T. Nguyen (2023): Southbound – the southernmost record of Tylototriton (Amphibia, Caudata, Salamandridae) from the Central Highlands of Vietnam represents a new species. - ZooKeys 1168: 193–218.
430. Ha, N. V., Ziegler, T., Nguyen, T. Q., Le, M. D. & L. Q. Vinh (2023): First record of Opisthotropis durandi Teynié, Lottier, David, Nguyen & Vogel, 2014 (Squamata: Natricidae) From Vietnam. - Academia Journal of Biology 45(2): 1–7.
429. Luu, V. Q., Nguyen, T. H., Do, Q. H., Pham, C. T., Hoang, T. T., Nguyen, T. Q., Le, M. D., Ziegler, T., Grismer, J. L. & L. L. Grismer (2023): A new species of Hemiphyllodactylus (Squamata, Gekkonidae) from Ha Giang Province, Vietnam. - ZooKeys 1167: 353–382.
428. Ngo, H. T., Hormann, H., Le, M. D., Pham, C. T., Phung, T. M., Do, D. T., Ostrowski, S., Nguyen T. Q. & T. Ziegler (2023): The discovery of two new species in the Cyrtodactylus irregularis group highlights that hidden diversity remains in the largest clade of the mega-diverse genus Cyrtodactylus. - European Journal of Taxonomy 875: 70–100.
427. Pham, A. V., Pham, C. T., Le, M. D., Ngo, H. T., Ong, A. V., Ziegler, T. & T. Q. Nguyen (2023): Achalinus quangi, a new odd-scaled snake species from Vietnam. - Zootaxa 5270 (1): 048–066.
426. Ngo. H. T., Nguyen, T. Q., Nguyen, H. M. V., Luu, V. Q., Phimphasone, V., Nghia, V. H., Ziegler, T. & M. D. Le (2023): Molecular assessment of pitviper populations (genus Trimeresurus) in Laos and Vietnam reveals new country record and overlooked diversity. - Vietnam Journal of Biotechnology 20(4): 589-598.
425. Do, D. T., Pham, C. T., Nguyen, T. Q. & T. Ziegler (2023): New records of poorly known kukri snakes from southern Vietnam including the proof of the first living individual of Oligodon moricei (Squamata: Colubridae). - Russian Journal of Herpetology Vol. 30, No. 2, 2023: 72–78.
424. Do, D. T., Do, Q. H., Le, M. D., Ngo, H. T., Ziegler, T., Nguyen, T. Q. & C. T. Pham (2023): A new species of Cyrtodactylus (Squamata: Gekkonidae) from Phu Yen Province, Vietnam. - Zootaxa 5271 (3): 503–524.
423. Ngo, H. N., Rödder, D., Grismer, L., Nguyen, T. Q., Le, M. D., Qi, S. & T. Ziegler (2023): Extraordinary diversity among allopatric species in the genus Goniurosaurus (Squamata: Eublepharidae): understanding niche evolution and the need of conservation measures. - Biodiversity and Conservation https://doi.org/10.1007/s10531-023-02564-4
422. Köhler, J., Gage, M., Janssen, H., Rauhaus, A. & T. Ziegler (2023): Longevity in salamandrid newts – a rule, not an exception? Verified cases of Japanese Fire-bellied Newts (Cynops pyrrhogaster) reaching a lifespan of more than 40 years. - Revue suisse de Zoologie 130(1): 121-124.
421. Tran, T. T., Pham, A. V., Le, M. D., Nguyen, N. H., Ziegler, T. & C. T. Pham (2023): A new species of Gracixalus (Anura, Rhacophoridae) from northwestern Vietnam. - ZooKeys 1153: 15–35.
420. Pham, A. V., Pham, C. T., Ngo, H. T., Nenh, S. B., Ziegler, T. & M. D. Le (2023): A new species of Amolops (Anura: Ranidae) from Son La Province, northwestern Vietnam. - Raffles Bulletin of Zoology 71: 51–69.
419. David, P., Lescure, J, Savage, J. M., Das, I,m Pauwels, O. S. G., Vogel, G. & T. Ziegler (2023): Coluber korros Lesson, 1831 and Coluber korros Schlegel, 1837 (Reptilia: Squamata: Colubridae): there is a korros too many in the family. - Zootaxa 5231 (3): 331–339.
418. Pham, A. V., Nguyen, T. Q., Pham, C. T., Sung, N. B., Le, M. D., Nguyen, T. T. & T. Ziegler (2023): The herpetofauna of Xuan Nha Nature Reserve, Vietnam. - Amphibian & Reptile Conservation 16(2): 215–236.

2022

417. Lammers, R., Scholten, C., Marcordes, B., Pagel, T. B., Rödder, D. & T. Ziegler (2022): Malagasy birds in zoological gardens. An analysis of zoo databases as basis for improved ex situ conservation measures. Zool. Garten N.F. 90 (2022) 121-150, doi:10.53188/zg006
416. Ralimanana, H., Perrigo, A. L., Smith, R. J., Borrell, J. S., Faurby, S., Rajaonah, M. T., Randriamboavonjy, T., Vorontsova, M. S., Cooke, R. S. C., Phelps, L. N., Sayol, F., Andela, N., Andermann, T., Andriamanohera, A. M., Andriambololonera, S., Bachman, S. P., Bacon, C. D., Baker, W. J., Belluardo, F., Birkinshaw, C., Cable, S., Canales, N. A., Carrillo, J. D., Clegg, R., Clubbe, C., Crottini, A., Damasco, G., Dhanda, S., Edler, D., Farooq, H., de Lima Ferreira, P., Fisher, B. L., Forest, F., Gardiner, L. M., Goodman, S. M., Grace, O. M., Guedes, T. B., Hackel, J., Henniges, M. C., Hill, R., Lehmann, C. E. R., Lowry II, P. P., Marline, L., Matos-Maraví, P., Moat, J., Neves, B., Nogueira, M. G. C., Onstein, R. E., Papadopulos, A. S. T., Perez-Escobar, O. A., Phelps, L. N., Phillipson, P. B., Pironon, S., Przelomska, N. A. S., Rabarimanarivo, M., Rabehevitra, D., Raharimampionona, J., Rajaonah, M. T., Rajaonary, F., Rajaovelona, L. R., Rakotoarinivo, M., Rakotoarisoa, A. A., Rakotoarisoa, S. E., Rakotomalala, H. N., Rakotonasolo, F., Ralaiveloarisoa, B. A., Ramirez-Herranz, M., Randriamamonjy, J. E. N., Randrianasolo, V., Rasolohery, A., Ratsifandrihamanana, A. N., Ravololomanana, N., Razafiniary, V., Razanajatovo, H., Razanatsoa, E., Rivers, M., Sayol, F., Silvestro, D., Testo, W., Torres Jiménez, M. F., Walker, K., Walker, B. E., Wilkin, P., Williams, J., Ziegler, T., Zizka, A. & A. Antonelli (2022): Madagascar’s extraordinary biodiversity: Threats and opportunities. Science 378, eadf1466 (2022). DOI: 10.1126/science.adf1466
415. Antonelli, A., Smith, R. J., Perrigo, A. L., Crottini, A., Hackel, J., Testo, W., Farooq, H., Torres Jiménez, M. F., Andela, N., Andermann, T., Andriamanohera, A. M., Andriambololonera, S., Bachman, S. P., Bacon, C. D., Baker, W. J., Belluardo, F., Birkinshaw, C., Borrell, J. S., Cable, S., Canales, N. A., Carrillo, J. D., Clegg, R., Clubbe, C., Cooke, R. S. C., Damasco, G., Dhanda, S., Edler, D., Faurby, S., de Lima Ferreira, P., Fisher, B. L., Forest, F., Gardiner, L. M., Goodman, S. M., Grace, O. M., Guedes, T. B., Henniges, M. C., Hill, R., Lehmann, C. E. R., Lowry II, P. P., Marline, L., Matos-Maraví, P., Moat, J., Neves, B., Nogueira, M. G. C., Onstein, R. E., Papadopulos, A. S. T., Perez-Escobar, O. A., Phelps, L. N., Phillipson, P. B., Pironon, S., Przelomska, N. A. S., Rabarimanarivo, M., Rabehevitra, D., Raharimampionona, J., Rajaonah, M. T., Rajaonary, F., Rajaovelona, L. R., Rakotoarinivo, M., Rakotoarisoa, A. A., Rakotoarisoa, S. E., Rakotomalala, H. N., Rakotonasolo, F., Ralaiveloarisoa, B. A., Ramirez-Herranz, M., Randriamamonjy, J. E. N., Randriamboavonjy, T., Randrianasolo, V., Rasolohery, A., Ratsifandrihamanana, A. N., Ravololomanana, N., Razafiniary, V., Razanajatovo, H., Razanatsoa, E., Rivers, M., Sayol, F., Silvestro, D., Vorontsova, M. S., Walker, K., Walker, B. E., Wilkin, P., Williams, J., Ziegler, T., Zizka, A. & H. Ralimanana (2022): Madagascar’s extraordinary biodiversity: Evolution, distribution, and use. Science 378, eabf0869 (2022). DOI:10.1126/science.abf0869
414. Hoang, C. V., Nguyen, T. T., Phan, T. Q., Pham, C. T., Ninh, H. T., Wang, B., Jiang, J., Ziegler, T. & T. Q. Nguyen (2022): Distribution pattern of the Microhyla heymonsi group (Anura, Microhylidae) with descriptions of two new species from Vietnam. - European Journal of Taxonomy 846: 1–4.
413. Pham, C. T., Hoang, V. V., Phan, T. Q., Nguyen T. Q. & T. Ziegler (2022): Hidden in the jungle of Vietnam: a new species of Quasipaa (Amphibia, Anura, Dicroglossidae) from Ngoc Linh Mountain. – ZooKeys 1124: 23-42.
412. Ngo, H. N., Nguyen, H. Q., Tien, P. Q., Tran, H. M., Nguyen, T. Q., van Schingen-Khan M. & T. Ziegler (2022): Ecological niche overlap of two allopatric karst-adapted tiger geckos (Goniurosaurus) from northern Vietnam: microhabitat use and implications for conservation. Journal of Natural History 56, 37–40: 1495–1511.
411. Ziegler, T., Ong, A. V., Hoang, Q. X., Pham, C. T. & T. Q. Nguyen (2022): A taxonomic update 20 years after the book release “The amphibians and reptiles of a lowland forest reserve in Vietnam”- Ho Ke Go: Implications for conservation. - Academia Journal of Biology 44(3): 111–132.
410. Ziegler, T. (2022): „The IUCN’s One Plan Approach and the role of progressive zoos in conservation: case studies from herpetology“, Riassunti / Abstracts, Plenary lecture, XIV Congresso Nazionale, Societas Herpetologica Italica, 13-17 settembre 2022 - Torino, 17-18.
409. Dinh, T. S., Phimpasone, V., Ha, H. B., Nguyen, T. Q., Ziegler, T. & V. Q. Luu (2022): New country record of Trimerodytes yapingi (Guo, Zhu & Liu, 2019) (Squamata: Natricidae) from Laos with the first description of a male specimen and expanded diagnosis. - Bonn zoological Bulletin 71 (2): 99–103.
408. Lo, N. T., Hoang, C. V., Nguyen, T. Q., Nguyen, S. H. L., Ziegler, T. & C. T. Pham (2022): First record of Leptobrachella shiwandashanensis Chen, Peng, Pan, Liao, Liu & Huang, 2021 (Anura: Megophryidae) from Vietnam. - Journal of Forestry Science and Technology No. 14: 28-32.
407. Vences, M., Stützer, D., Rasoamampionona Raminosoa, N. & T. Ziegler (2022): Towards a DNA barcode library for Madagascar’s threatened ichthyofauna. PLoS ONE 17(8): e0271400. https://doi.org/10.1371/journal.pone.0271400
406. Ha, N. V., Ziegler, T., Sy, T. D., Le, M. D., Nguyen, T. Q. & V, Q. Luu (2022): A new species of the genus Achalinus (Squamata: Xenodermidae) from Son La Province, Vietnam. - Zootaxa 5168 (3): 375–387.
405. Krzikowski, M., Nguyen, T. Q., Pham, C. T., Rödder, D., Rauhaus, A., Le, M. D. & T. Ziegler (2022): Assessment of the threat status of the amphibians in Vietnam - Implementation of the One Plan Approach. – Nature Conservation, 49: 77-116.
404. Ngo, H. N., Nguyen, H. Q., Tran, H. M., Phan, T. Q., Tran, T. T., Gewiss, L. R., Rödder, D., Nguyen, T. Q., Ziegler, T. (2022): Living under the risk of extinction: population status and conservation needs assessment of a micro–endemic tiger gecko in Vietnam. - Animal Biodiversity and Conservation 45(2): 175–188. Doi: https://doi. org/10.32800/abc.2022.45.0175
403. Ziegler, T., Kamphausen, J., Glaw, F., Crottini, A., Garcia, G., Rödder, D., Rauhaus, A., Stenger, L. & A. Wahle (2022): Threatened Malagasy amphibians and reptiles in zoos – a call for enhanced implementation of the IUCN’s One Plan Approach. - Der Zoologische Garten 90(2022): 21-69.
402. Luong, A. M., Hoang, C. V., Pham, C. T., Nguyen, T. T., Orlov, N., Ziegler, T. & T. Q. Nguyen (2022): A new species of Xenophrys (Amphibia: Anura: Megophryidae) from Truong Son Range, Vietnam. Zootaxa 5150 (3): 333–356.
401. van Schingen-Khan, M., Barthel, L. M. F., Pham, D. T. K., Pham, C. T., Nguyen, T. Q., Ziegler, T. & M. Bonkowski (2022): Will climatic changes affect the Vietnamese crocodile lizard? Seasonal variation in microclimate and activity pattern of Shinisaurus crocodilurus vietnamensis. Amphibia-Reptilia DOI:10.1163/15685381-bja10089 brill.com/amre
400. Ngo, H. T., Do, Q. H., Pham, C. T., Luu, V. Q., Grismer, L. L., Ziegler, T., Nguyen, V. T. H., Nguyen, T. Q. & M. D. Le (2022): How many more species are out there? Current taxonomy substantially underestimates the diversity of bent-toed geckos (Gekkonidae, Cyrtodactylus) in Laos and Vietnam. – ZooKeys 1097: 135–152.
399. Pham, C. T., Le, M. D., Ngo, H. T., Ziegler, T. & T. Q. Nguyen (2022): First record of Limnonectes fastigatus Stuart, Schoen, Nelson, Maher, Neang, Rowley & McLeod, 2020 (Anura: Dicroglossidae) from Vietnam. – Academia Journal of Biology 44(1): 115–121.
398. Pham, A. V., Nguyen, T. Q., Pham, C. T., Sung, N. B., Le, M. D., Vaxong, T. & T. Ziegler (2022): New records of amphibians from Son La Province, Vietnam. - Herpetology Notes 15: 169-178.
397. Nguyen, T. T., Ngo, H. T., Ha, Q. Q., Nguyen, T. Q., Le, T. Q., Nguyen, S. H., Pham, C. T., Ziegler, T., van Schingen-Khan, M. & M. D. Le (2022): Molecular phylogenetic analyses and ecological niche modeling provide new insights into threats to the endangered Crocodile Lizard (Shinisaurus crocodilurus). - Frontiers of Biogeography 2022, 14.1, e54779
396. Ninh, H. T., Nguyen, T. T., Nguyen, H. Q., Hoang, N. V., Siliyavong, S., Nguyen, T. V., Le, D. T., Le, Q. K. & T. Ziegler (2022): A new species of mossy frog (Anura: Rhacophoridae) from Northeastern Vietnam. - European Journal of Taxonomy 794: 72–90.
395. Ngo, H. N., Nguyen, T. V., Phan, T. Q., Nguyen, T. Q. & T. Ziegler (2022): The herpetofauna of Hon Khoai Island, Ca Mau Province, Vietnam. - Biodiversity Journal 13(1): 3–17.
394. Ngo, H. N., Nguyen, H. Q., Phan, T. Q., Rödder, D., Gewiss, L. R., Nguyen, T. Q. & T. Ziegler (2022): First ecological assessment of the endangered Lichtenfelder’s Tiger Gecko (Goniurosaurus lichtenfelderi) from northern Vietnam: Micro-habitat and macro-climatic niche comparisons between island and mainland populations. - Amphibia-Reptilia DOI:10.1163/15685381-bja10083
393. Ziegler, T. & A. Rauhaus (2022): Vietnamese Tiger Gecko Research and Conservation Breeding Projects at the Terrarium Section of Cologne Zoo, Germany. - Ratel 48 (3): 5-10.
392. Lötters, S., Plewnia, A., Hönig, A., Jung, A., Laudor, J. & T. Ziegler (2022): The gastromyzophorous tadpole of the pink harlequin frog from Suriname with comments on the taxonomy of Guianan Clade Atelopus (Amphibia, Bufonidae). - Zootaxa 5087 (4): 591–598.
391. Leiss, L., Rauhaus, A., Rakotoarison, A., Fusari, C., Vences, M. & T. Ziegler (2022): Review of threatened Malagasy freshwater fishes in zoos and aquaria: The necessity of an ex situ conservation network - A call for action. – ZooBiology 41(3): 244-262.

2021

390. Nguyen, T. V., Hoang, C. V., Jianping, J., Orlov, N. L., Ninh, H. T., Nguyen, H. Q., Nguyen, T. T. & T. Ziegler (2021): A new species of Vietnamophryne with an extended description of Vietnamophryne orlovi. - Russian Journal of Herpetology 28 (6): 355-368.
389. Sitthivong, S., Lo, O. V., Nguyen, T. Q., NGO, H. T., Khotpathoom, T., Le, M. D., Ziegler, T. & V. Q. Luu (2021): A new species of the Gekko japonicus group (Squamata: Gekkonidae) from Khammouane Province, central Laos. – Zootaxa 5082(6): 553–571.
388. Ziegler, T. (2021): Conservation breeding projects of threatened Southeast Asian amphibian and reptile species at the herpetology department of the Cologne Zoo - implementation of the IUCN's One Plan Approach. – Programme and Abstracts, International Academic Conference on Herpetological Biodiversity and Conservation in Eurasian Countries, Chengdu, China, 2^nd to 5^th November, 2021: 87-91
387. Ngo, H. N., Nguyen, H. Q., Phan, T. Q., Tran, H. M., Nguyen, T. Q., Ziegler, T. & D. Rödder (2021): Vulnerability of an endemic Tiger Gecko (Goniurosaurus huuliensis) to climate change: modeling environmental refugia and implications for in-situ conservation. - Salamandra 57(4): 464–474.
386. Rauhaus, A. & T. Ziegler (2021): Tylototriton vietnamensis Böhme, Schöttler, Nguyen & Köhler, 2005 – Vietnamesischer Krokodilmolch. In: Grosse, W.-R. (Hrsg.): Gefährdete Molch- und Salamanderarten – Richtlinien für Erhaltungszuchten, Band 3. – Mertensiella 30: 212-225.
385. Souvannasy, P., Luu, V. Q., Wayakone, S., Sounivong, B., Soudthichak, S., Nguyen, T. Q., Le, M. D. & T. Ziegler (2021): Camera trap confirmation of another Siamese crocodile (Crocodylus siamensis) population in Khammouane Province, central Lao PDR, with notes on conservation planning. - Crocodile Specialist Group Newsletter 40 (3): 22-24.
384. Mobaraki, A., McCaskill, L., Schepp, U., Abtin, E., Masroor, R., Pandhi, D., Desai, B., Muckerjee, S., Rasheed, T., Razzaque, S. A., de Silva, A., Stevenson, C., Rauhaus, A., Le, M. D. & T. Ziegler (2021): Conservation status of the mugger (Crocodylus palustris): Establishing a task force for a poster species of climate change. - Crocodile Specialist Group Newsletter 40 (3): 12-20
383. Wahle, A., Rödder, D., Chapple, D. G., Meiri, S., Rauhaus, A. & T. Ziegler (2021): Skinks in Zoos: A global approach on distribution patterns of threatened Scincidae in zoological institutions. - Global Ecology and Conservation 30 (2021) e01800
382. Do, Q. H., Nguyen, K. V., Le, M. D., Pham, C. T., Ziegler, T. & T. Q. Nguyen (2021): A new species of Hemiphyllodactylus Bleeker, 1860 (Squamata: Gekkonidae) from Da Lat Plateau, Vietnam. - Zootaxa 5023 (1): 093–106.
381. Do, Q. H., Phung, T. M., Ngo, H. T., Le, M. D., Ziegler, T., Pham, C. T. & T. Q. Nguyen (2021): A new species of Cyrtodactylus (Squamata: Gekkonidae) from Ninh Thuan Province, southern Vietnam. - Zootaxa 4999 (1): 058–076.
380. Grismer, L. L., Wood, Jr., P.L., Poyarkov, N. A., Le, M. D., Kraus, F., Agarwal, I., Oliver, P. M., Nguyen, S. N., Nguyen, T. Q., Karunarathna, S., Welton,L. J., Stuart, B. L., Luu, V. Q., Bauer, A. M., O’Connell, K. A., Quah, E. S. H., Chan, K. O., Ziegler, T., Ngo, H., Nazarov, R. A., Aowphol, A., Chomdej, S., Suwannapoom, C., Siler, C. D., Anuar, S., Tri, N. V. & J. L. Grismer (2021) Phylogenetic partitioning of the third-largest vertebrate genus in the world, Cyrtodactylus Gray, 1827 (Reptilia; Squamata; Gekkonidae) and its relevance to taxonomy and conservation. Vertebrate Zoology 71, 2021, 101–154.
379. Ngo, H. N., Nguyen, H. Q., Phan, T. Q., Nguyen, T. Q., Gewiss, L. R., Rödder, D. & T. Ziegler (2021): Modeling the environmental refugia of the endangered Lichtenfelder’s Tiger Gecko (Goniurosaurus lichtenfelderi) towards implementation of transboundary conservation. – Frontiers of Biogeography 2021, 13.4, e51167. doi:10.21425/F5FBG51167
378. Rauhaus, A., Niggemann, C., Nicolaudius, J. & T. Ziegler (2021): Haltung und Nachzucht der vom Aussterben bedrohten Burmesischen Sternschildkröte Geochelone platynota im Kölner Zoo, Deutschland. – Sauria, Berlin, 43(2): 13–26.
377. Ngo, H. N., Nguyen, H. Q., Tran, H. M., Ngo, H. T., Le, M. D., Gewiss, L. R., van Schingen-Khan, M., Nguyen, T. Q. & T. Ziegler (2021): A morphological and molecular review of the genus Goniurosaurus, including an identification key. – European Journal of Taxonomy 751: 38–67.
376. Grismer, L. L., Ngo, H. N., Q, S., Wang, Y.-Y., Le, M. D. & T. Ziegler (2021): Phylogeny and evolution of habitat preference in Goniurosaurus (Squamata: Eublepharidae) and their correlation with karst and granite-stream-adapted ecomorphologies in species groups from Vietnam. – Vertebrate Zoology 71, 2021, 335–352.
375. Le, D. T., Luong, A. M., Pham, C. T., Phan, T. Q., Nguyen, S. L. H., Ziegler, T. & T. Q. Nguyen (2021): New records and an updated checklist of amphibians and snakes from Tuyen Quang Province, Vietnam. – Bonn zoological Bulletin 70 (1): 201–219.
374. Nguyen, T. Q., Ngo, H. N., Nguyen, K. V., Bui, M. H., Dang, P. H., Nguyen, C. T., Hoang, T. V. & T. Ziegler (2021): Bedrohtes Biodiversitätspotential der südvietnamesischen Insel Hon Khoai – Lebensraum des endemischen und stark bedrohten Psychedelischen Felsengeckos (Cnemaspis psychedelica). – Mitteilungen Zoologische Gesellschaft für Arten- und Populationsschutz e. V. 37(1): 17-22.
373. Ziegler, T. & A. Rauhaus (2021): Der Aufbau des Europäischen Erhaltungszuchtprogramms für das vom Aussterben bedrohte Philippinenkrokodil – von der Ersatzbank bis zur Wiederauswilderung. – Mitteilungen Zoologische Gesellschaft für Arten- und Populationsschutz e. V. 37(1): 8-13.
372. Le, D. T., Sitthivong, S., Tran, T. T., Grismer, L. L., Nguyen, T. Q., Le, M. D., Ziegler, T. & V. Q. Luu (2021): First record of the Cyrtodactylus brevipalmatus group (Squamata: Gekkonidae) from Vietnam with description of a new species. – Zootaxa 4969 (3): 492–510.
371. Nguyen, T. H., Luu, V. Q., Sitthivong, S., Ngo, H. T., Nguyen, T. Q., Le, M. D. & T. Ziegler (2021): A new species of Dixonius (Squamata: Gekkonidae) from Vientiane Capital, Laos. – Zootaxa 4965 (2): 351–362.
370. Hoang, C. V., Nguyen, T. T., Ninh, H. T., Luong, A.M., Pham, C. T., Nguyen, T. Q., Orlov, N. L., Chen, Y., Wang, B., Ziegler, T. & J. Jiang (2021): Two new cryptic species of Microhyla Tschudi, 1838 (Amphibia, Anura, Microhylidae) related to the M. heymonsi group from central Vietnam. – ZooKeys 1036: 47–74.
369. Gewiss, L. R., Ngo, H. N., van Schingen-Khan, M., Nguyen, K. V., Nguyen, T. Q., Rauhaus, A. & T. Ziegler (2021): Photographic identification of Cnemaspis psychedelica: a useful tool to improve the regulation of international wildlife trade. - Herpetological Conservation and Biology 16(1):142–149.
368. Bernardes, M., Dreesmann, J., Pham, C. T., Nguyen, T. Q., Goldschmidt, T. & T. Ziegler (2021): Multiple newt threats – occurrence of Paramesotriton deloustali and P. guangxiensis in differently disturbed habitats in Vietnam including new data on the parasite-host relationships with water mites. – Limnologica 88 (2021) 1-8.
367. Chapple, D. G., Roll, U., Böhm, M., Aguilar, R., Amey, A. P., Austin, C. C., Baling, M., Barley, A. J., Bates, M. F., Bauer, A. M., Blackburn, D. G., Bowles, P., Brown, R. M., Chandramouli, S. R., Chirio, L., Cogger, H., Colli, G. R., Conradie, W., Couper, P. J., Cowan, M. A., Craig, M. D., Das, I., Datta-Roy, A., Dickman, C. R., Ellis, R. J., Fenner, A. L., Ford, S., Ganesh, S. R., Gardner, M. G., Geissler, P., Gillespie, G. R., Glaw, F., Greenlees, M. J., Griffith, O. W., Grismer, L. L., Haines, M. L., Harris, D. J., Hedges, S. B., Hitchmough, R. A., Hoskin, C. J., Hutchinson, M. N., Ineich, I., Janssen, J., Johnston, G. R., Karin, B. R., Keogh, J. S., Kraus, F., LeBreton, M., Lymberakis, P., Masroor, R., McDonald, P. J., Mecke, S., Melville, J., Melzer, S., Michael, D. R., Miralles, A., Mitchell, N. J., Nelson, N. J., Nguyen, T. Q., de Campos Nogueira, C., Ota, H., Pafilis, P., Pauwels, O. S. G., Perera, A., Pincheira-Donoso, D., Reed, R. N., Ribeiro-Júnior, M. A., Riley, J. L., Rocha, S., Rutherford, P. L., Sadlier, R. A., Shacham, B., Shea, G. M., Shine, R., Slavenko, A., Stow, A., Sumner, J., Tallowin, O. J. S., Teale, R., Torres-Carvajal, O., Trape, J. F., Uetz, P., Ukuwela, K. D. B., Valentine, L., Van Dyke, J. U., van Winkel, D., Vasconcelos, R., Vences, M., Wagner, P., Wapstra, E., While, G. M., Whiting, M. J., Whittington, C. M., Wilson, S., Ziegler, T., Tingley, R. & S. Meiri (2021): Conservation status of the world’s skinks (Scincidae): Taxonomic and geographic patterns in extinction risk. – Biological Conservation 257 (2021) 1-12.
366. Hoang, C. V., Jiang, J., Nguyen, H. Q., Orlov, N., Le, M. V., Nguyen, H. V., Nguyen, T. V., Nguyen, T. T. & T. Ziegler (2021): A new species of Vietnamophryne from Vietnam. – Revue suisse de Zoologie 128(1): 207-219.
365. Luong, A. M., Pham, C. T., Do, Q. H., Hoang, C. V., Phan, T. Q., Nguyen, T. Q., Ziegler, T. & M. D. Le (2021): New records and an updated checklist of amphibians from Lai Chau Province, Vietnam. – Check List 17 (1): 1–14.
364. Jacken, A., Rödder, D. & T. Ziegler (2021): Distribution Patterns of Threatened Amphibians in the Zoo and Aquarium Community: A Call to Action. – FrogLog 28(1), Nr. 122: 12-13.
363. Le, D. T., Nguyen, L. P., Pham, C. T., Nguyen, T. Q., Phan, T. Q., Dang, P. H. & T. Ziegler (2021): New records of frogs from Quang Nam Province, central Vietnam. – Herpetology Notes 14: 317-324.
362. David, P., Vogel, G., Nguyen, T. Q., Orlov, N. L., Pauwels, O. S. G., Teynié, A. & T. Ziegler (2021): A revision of the dark-bellied, stream-dwelling snakes of the genus Hebius (Reptilia: Squamata: Natricidae) with the description of a new species from China, Vietnam and Thailand. – Zootaxa 4911(1): 001–061.

2020

361. Ostrowski, S., Le, M. D., Ngo, H. T., Pham, C. T., Phung, T. M., Nguyen, T. Q., & T. Ziegler (2021): A new Cyrtodactylus (Squamata: Gekkonidae) from Binh Thuan Province, southern Vietnam. – European Journal of Taxonomy 731: 47–70.
360. Manalo, R., Mercado, V., Tagtag, A., Rauhaus, A. & T. Ziegler (2021): Repatriation of Philippine crocodiles from Cologne Zoo to the Philippines. – Crocodile Specialist Group Newsletter 39(4): 16-18.
359. Rauhaus, A. & T. Ziegler (2021): A note on longevity in the Quince Monitor in a European zoo and potential needs for maintaining a sustainable population under human care. – Biawak 14(1-2): 32-34.
358. Pham, C. T.. Do, D. T., Le, M. D., Ngo, H. T., Nguyen, L. T., Ziegler, T. & T. Q. Nguyen (2020): A new species of Limnonectes (Amphibia: Anura: Dicroglossidae) from Vietnam. –Zootaxa 4894 (3): 387–402.
357. Ziegler, T., Frank-Klein, N., Ommer, S., Hürche, R., Loiselle, P. V. & M. Vences (2020): Keeping and breeding of threatened endemic Malagasy freshwater fishes at Cologne Zoo (Germany): a contribution towards the advancement of a conservation breeding network. – Zool. Garten N.F. 88 (2020): 123-155.
356. Hüllen, S., Mandl, C., Geiger, M. F., Hadiaty, R. K., Wahyudewantoro, G., Ziegler, T. & F. Herder (2020): On the Challenge to Correctly Identify Rasboras (Teleostei: Cyprinidae: Danioninae) Inhabiting the MesangatWetlands, East Kalimantan, Indonesia. – Diversity 2021, 13(8): 1-15, https://doi.org/10.3390/d13010008.
355. Ziegler, T., Rauhaus, A., Niggemann, C., Nicolaudius, J., Bernardes, M. & T. Q. Nguyen (2020): Developing a conservation breeding network for threatened Vietnamese Crocodile Newts. – AArk Newsletter Nr. 52, December 2020: 9-12.
354. Miller, A. H., Davis, H. R., Luong, A. M., Do, Q. H., Pham, C. T., Ziegler, T., Lee, J. L., de Queiroz, K., Reynolds, R. G. & T. Q. Nguyen (2020): Discovery of a New Species of Enigmatic Odd-Scaled Snake (Serpentes: Xenodermidae: Achalinus) from Ha Giang Province, Vietnam. – Copeia 108(4): 796–808.
353. Luu, V. Q., Ziegler., T., Ha, N. V., Lo, O. V., Hoang, T. T., Ngo, H. T., Le, M. D., Tran, D. H. & T. Q. Nguyen (2020): A new species of Achalinus (Squamata: Xenodermidae) from Trang An Landscape Complex, Ninh Binh Province, Vietnam. – Zootaxa 4877(1): 174–184.
352. Jacken, A., Rödder, D. & T. Ziegler (2020): Amphibians in zoos: a global approach on distribution patterns of threatened amphibians in zoological collections. International Zoo Yearbook 54. DOI: 10.1111/izy.12272
351. Janssen, H. Y., Ren, J.-L., Li, J.-T., Wang, Z., Nguyen T. T., Nguyen, T. Q., Bui, Q. T. T., Nho, H. T. N., Le, M. D. & T. Ziegler (2020): Range extension and extended diagnosis of Lycodon pictus: First country record from China. – Revue suisse de Zoologie (September 2020) 127(2): 413-422.
350. Lenz, T., Ziegler, T. & L. Kolter (2020): Stimulation of Rubbing Behavior in Sun Bears for Hair Trapping: Results of a Pilot Study. – International Bear News 29(2): 29-31.
349. Le, M. D., McCormack, T. E. M., Hoang, H. V., Duong, H.T., Nguyen, T. Q., Ziegler, T., Nguyen, H. D. & Ngo, H. T. (2020): Threats from wildlife trade: The importance of genetic data in safeguarding the endangered Four-eyed Turtle (Sacalia quadriocellata). – Nature Conservation 41: 91–111.
348. Pham, C. T., Do, Q., H., Ngo, H. N., Tran, T. T., Ziegler, T. & T. Q. Nguyen (2020): First report on the anuran fauna of Hai Ha forest, Quang Ninh Province, Vietnam. – Check List 16 (4): 1025–1041.
347. Kasper, K., Schweikhard, J., Lehmann, M., Ebert, C. L., Erbe, P., Wayakone, S., Nguyen, T. Q., Le, M. D. & T. Ziegler (2020): The extent of the illegal trade with terrestrial vertebrates in markets and households in Khammouane Province, Lao PDR. – Nature Conservation 41: 25-45.
346. Sachs, M., Schluckebier, R., Poll, G., Schulz, V., Sabino-Pinto, J., Schmidt, E., Simon, K., Künzel, S., Ziegler, T., Arndt, H. & M. Vences (2020): Evidence of Batrachochytrium dendrobatidis and other amphibian parasites in the Green toad (Bufotes viridis), syntopic amphibians and environment in the Cologne Bay, Germany. – Salamandra 56: 275–284.
345. Gewiss. L. R., Ngo, H. N., van Schingen-Khan, M., Bernardes, M., Rauhaus, A., Pham, C. T., Nguyen, T. Q. & T. Ziegler (2020): Population assessment and impact of trade on the Asian Water Dragon (Physignathus cocincinus Cuvier, 1829) in Vietnam. – Global Ecology and Conservation 23 (2020) e01193: 1-10.
344. Schneider N., Luu V. Q., Sitthivong S., Teynie A., Le M. D., Nguyen T. Q. & T. Ziegler T. (2020): Two new species of Cyrtodactylus (Squamata: Gekkonidae) from northern Laos, including new finding and expanded diagnosis of C. bansocensis. – Zootaxa 4822 (4): 503–530.
343. Ninh, H. T., Nguyen, T. T., Orlov, N., Nguyen, T. Q. & T. Ziegler (2020): A new species of the genus Zhangixalus (Amphibia: Rhacophoridae) from Vietnam. – European Journal of Taxonomy 688: 1–18.
342. Do, Q. H., Pham, C. T., Phan, T. Q., Le, M. D., Ziegler, T. & & T. Q. Nguyen (2020): A new species of Hemiphyllodactylus (Squamata: Gekkonidae) from Tuyen Quang Province, Vietnam. – Zootaxa 4821(3): 511-532.
341. Ziegler. T. & M. Vences (2020): Molecular identification of water monitors (Varanus salvator complex) from confiscations and the pet trade, including phylogenetic placement of V. s. ziegleri – a molecular reference for species conservation enforcement and conservation breeding. – Der Zoologische Garten 88: 31-50.
340. Ngo, H. T., Nguyen, T. T., Le, M. D., van Schingen-Khan, M., Nguyen, T. Q., Rauhaus, R., Vences, M. & T. Ziegler (2020): Genetic screening of captive crocodile lizards (Shinisaurus crocodilurus) in Europe. – Der Zoologische Garten 88: 17-30.
339. Ninh, H. T., Nguyen, T. T., Orlov, N., Nguyen, T. Q., & T. Ziegler (2020): A new species of the genus Zhangixalus (Amphibia: Rhacophoridae) from Vietnam. – European Journal of Taxonomy 688: 1–18.
338. Schneider, M., Ziegler, T. & L. Kolter (2020) Thermoregulation in Malayan sun bears (Helarctos malayanus) and its consequences for in situ conservation. – Journal of Thermal Biology 91(2020): 1-11.
337. Bauer, T., Bushell, M. & T. Ziegler (2019): Ein Portrait der stark gefährdeten Desertas-Tarantel Hogna ingens (Blackwall, 1857), die wahrscheinlich größte Wolfspinne der Welt. – ZGAP Mitteilungen 36(1): 31-34.
336. Nguyen, T. T., Ninh, H. T., Orlov, N., Nguyen, T. Q. & T. Ziegler (2020): A new species of the genus Zhangixalus (Amphibia: Rhacophoridae) from Vietnam. – Journal of Natural History.
335. Nguyen, T. Q., Do, Q. H., Ngo, H. T., Pham, A. V., Pham, C. T., Le, M. D. & T. Ziegler (2020): Two new species of Hemiphyllodactylus (Squamata: Gekkonidae) from Hoa Binh Province, Vietnam. – Zootaxa 4801 (3): 513–536.
334. Pham, A.V., Ziegler, T. & T. Q. Nguyen (2020): New records and an updated checklist of snakes from Son La Province, Vietnam. – Biodiversity Data Journal 8: e52779. https://doi.org/10.3897/BDJ.8.e52779
333. Ostrowski, S., Do, D. T., Le, M. D., Ngo, H. T., Pham, C. T., Nguyen, T. Q., Nguyen, V. T. H. & T. Ziegler (2020): A new species of Cyrtodactylus (Squamata: Gekkonidae) from southern Vietnam. – Zootaxa 4789 (1): 171–20.
332. Nguyen, T. H., Sitthivong, S., Ngo, H. T., Luu, V. Q., Nguyen, T. Q., Le, M. D. & T. Ziegler (2020): A new species of Dixonius (Squamata: Gekkonidae) from the karst forest of Khammouane Province, central Laos. – Zootaxa 4759(4): 530-542.
331. Ziegler, T. (2020): „Đầu Sấu“ – ein Rekordkrokodil aus Vietnam. - elaphe 46-50.
330. Luu, V. Q., Dinh, T. S., Lo, O. V., Nguyen, T. Q. & T. Ziegler (2020): New records and an updated list of reptiles from Ba Vi National Park, Vietnam. – Bonn zoological Bulletin 69 (1): 1–9.
329. Wang, J., Lyu, Z.-T., Zeng, Z.-C., Lin, C.-Y., Yang, J.-H., Nguyen, T.-Q., Le, M. D., Ziegler, T. & Y.-Y. Wang (2020): Re-examination of the Chinese record of Opisthotropis maculosa (Squamata, Natricidae), resulting in the first national record of O. haihaensis and description of a new species. – ZooKeys 913: 141–159.
328. Ziegler, T., Vences, M., Schmidt, E., Dieckmann, R., Niggeman, C. & A. Rauhaus (2020): Gemeinsam für die biologische Vielfalt. – Kompetenz Wasser, Kölner Fachjournal für Abwasser, Hochwasserschutz und Gewässer, 2019, 28: 19-23.
327. Ziegler, T., Nguyen, T. T., Ong, A. V., Pham, C. T. & T. Q. Nguyen (2020): In search of the Spotted Softshell Turtle in Vietnam: An implementation of the One Plan Approach. – WAZA News 2020, 1: 24-27.
326. Ziegler, T., Rauhaus, A. & M. Vences (2020): Does genetic screening reveal first zoo breeding of the Cryptic Golden Tegu (Tupinambis cryptus)? – Zool. Garten N.F. 87 (2019) 25-40.
325. Kirchhauser, J., Pfeiffer, M., Jakobs, S., Lang, B., Mendoza-Weber, A., Speck, M. & T. Ziegler (2020): Breeding and larval development of the Yellowbanded Pipefish Dunckerocampus pessuliferus, including an overview of the current zoo population: An approach towards sustainable captive populations. – Zool. Garten N.F. 87 (2019) 7-24.

2019

324. Ziegler, T., Nguyen, T.T., Nguyen, M.T., Manalo, R., Diesmos, A., & C. Manolis (2019): A giant crocodile skull from Cần Thơ, named “Dau Sau”, represents the largest known saltwater crocodile (Crocodylus porosus) ever reported from Vietnam. – Tap Chi Sinh Hoc, Journal of Biology, Vietnam Academy of Science and Technology, 41, 4, 1-6.
323. Nguyen, T. Q., Pham, C. T., Nguyen, T. T., Luong, M. A. & T. Ziegler (2020): A new species of Megophrys (Amphibia: Anura: Megophryidae) from Vietnam. – Zootaxa 4722 (5): 401-422.
322. Ziegler, T., Rauhaus, A., & M. Vences (2019): Welt-Zooerstzucht des Kryptischen Goldtejus (Tupinambis cryptus) im Terrarium des Kölner Zoos. – Elaphe, 1, 2020, 22-31.
321. Ziegler, T., & A. Rauhaus (2019: Der Beitrag des Kölner Zoos zur Erhaltung der Amphibienvielfalt: Nachzucht-, Forschungs- und Schutzprojekte. – Zeitschrift des Kölner Zoos, 2, 79-104.
320. Bui, B.V., Ziegler, T., & M. Bonkowski (2019): Checklist of beetles in the sugenus Copris (Paracopris) Balthasar from Asia with description of a new species, and redescription of Copris (Paracopris) punctulatus Wiedemann (Coleoptera: Scarabaeidae: Scarabaeinae). – Zootaxa, 4712, 1, 051-064.
319. Sitthivong, S., Luu, V. Q., Ha, N. V., Nguyen, T. Q., Le, M. D. & T. Ziegler (2019): A new species of Cyrtodactylus (Squamata: Gekkonidae) from Vientiane Province, northern Laos. – Zootaxa 4701(3): 257-275.
318. Pham, A. V., Pham, C. T., Doan, L. D., Ziegler, T. & T. Q. Nguyen (2019): New records of megophryids (Amphibia: Anura: Megophryidae) from Son La Province, Vietnam. – Biodiversity Data Journal 7: e39140.
317. Bui, V. B., Ziegler, T. & M. Bonkowski (2019): Morphological traits reflect dung beetle response to land use changes in tropical karst ecosystems of Vietnam. – Ecological Indicators 108(2020) 105697.
316. Janssen, H. Y., Pham, C. T., Ngo, H. T., Le, M. D., Nguyen, T. Q. & T. Ziegler (2019): A new species of Lycodon Boie, 1826 (Serpentes: Colubridae) from northern Vietnam. – ZooKeys 875: 1-29.
315. Ziegler, T. & T. Q. Nguyen (2019): Herpetological research and conservation in Vietnam and Laos in compliance with the one plan approach. – Proceedings of the 4th National Scientific Conference on Amphibians and Reptiles in Vietnam, Thanh Hoa, 30.8.2019, 17-26.
314. Ngo, H. N., Le, T. Q., Pham, M. L., Nguyen, T. Q., Le, M. D., Van Schingen, M. & T. Ziegler (2019): First record of the Cat Ba tiger gecko, Goniurosaurus catbaensis, from Ha Long Bay, Quang Ninh Province, Vietnam: Microhabitat selection, potential distribution, and evidence of threats. – Amphibian and Reptile Conservation 13(2): 1-13.
313. Pham, A. V., Sung, N. B., Pham, C. T., Le, M. D., Ziegler, T. & T. Q. Nguyen (2019): A new species of Amolops (Anura: Ranidae) from Vietnam. – Raffl. Bull. Zool. 67: 363-377.
312. Ziegler, T., Pham, C. T., Nguyen, T. V., Nguyen, T. Q., Wang, J., Wang, Y.-Y., Stuart, B. L. & M. D. Le (2019): A new species of Opisthotropis from northern Vietnam previously misidentified as the Yellow-spotted Mountain Stream Keelback O. maculosa Stuart & Chuyankern, 2007 (Squamata: Natricidae). – Zootaxa 4613(3): 579-586.
311. Schweikhard, J., Kasper, K., Ebert, C. L., Lehmann, M., Erbe., P. & T. Ziegler (2019): Investigations into the illegal wildlife trade in central Lao PDR. - Traffic Bulletin 3(1): 19-25.
310. Ziegler, T., Nguyen, T. Q., Pham, C. T., Nguyen, T. T., Pham, A. V., Van Schingen, M., Nguyen, T. T. & M. D. Le (2019): Three new species of the snake genus Achalinus from Vietnam (Squamata: Xenodermatidae). – Zootaxa 4590(2): 249-269.
309. Luu, V. Q., Ziegler, T., Ha, N. V., Le, M. D. & T. T. Hoang (2019): A new species of Lycodon Boie, 1826 (Serpentes: Colubridae) from Thanh Hoa Province, Vietnam. – Zootaxa 4586(2): 261-277.
308. Ziegler, T., Tran, V. A., Bapp, R. D., Jones, R. D., Moler, P. E., Van Devender, R. W. & T. Q. Nguyen (2019): A new species of reed snake, Calamaria Boie, 1827 from the Central Highlands of Vietnam (Squamata: Colubridae). – Revue Suisse de Zoologie 126(1): 17-26.
307. Ziegler, T., Luu, V. Q., Nguyen, T. T., Ha, N. V., Ngo, H. T., Le, M. D. & T. Q. Nguyen (2019) Rediscovery of Andrea’s keelback, Hebius andreae (Ziegler & Le, 2006): First country record for Laos and phylogenetic placement. – Revue Suisse de Zoologie 126(1): 61-71.
306. Ziegler, T., Van Schingen, M., Rauhaus, A., Dang, P. H., Pham, D. T. K., Pham, C. T. & T. Q. Nguyen (2019): New insights into the habitat use and husbandry of crocodile lizards (Reptilia: Shinisauridae) including the conception of new facilities for Vietnamese crocodile lizards Shinisaurus crocodilurus vietnamensis in Vietnam and Germany. – International Zoo Yearbook 53: 250–269.
305. Ngo, H. N., Nguyen, T. Q., Phan, T. Q., Van Schingen, M. & T. Ziegler (2019) A case study on trade in threatened Tiger Geckos (Goniurosaurus) in Vietnam including updated information on the abundance of the Endangered G. catbaensis. – Nature Conservation 33: 1-19.
304. Reinhardt, T., Van Schingen, M., Windisch, H. S., Nguyen, T. Q., Ziegler, T. & P. Fink (2019): Monitoring a loss: detection of the semi-aquatic crocodile lizard (Shinisaurus crocodilurus) in inaccessible habitats via environmental DNA. – Aquatic Conservation Mar. Freshw. Ecosyst. DOI: 10.1002/aqc.3038
303. Pham, C. T., Rauhaus, A., Tran, T. D., Niggemann, C., Dang, P. H., Le, M. D., Nguyen, T. Q. & T. Ziegler (2019): First record of Gracixalus quangi Rowley, Dau, Nguyen, Cao & Nguyen, 2011, from Hoa Binh Province, Vietnam, including the first documentation of advanced larval stages and an extended tadpole description. – Amphibian & Reptile Conservation 13(1): 90-103.
302. Farkas, B., Ziegler, T., Pham, C. T., Ong, A. V. & U. Fritz (2019): A new species of Pelodiscus from northeastern Indochina (Testudines: Trionychidae). – ZooKeys 824: 71-86.
301. Pham, A. V., Le, M. D., Ngo, H. T., Ziegler, T. & T. Q. Nguyen (2019): A new species of Cyrtodactylus (Squamata: Gekkonidae) from northwestern Vietnam. – Zootaxa 4544(3): 360-380.

2018

300. Ziegler, S., Giesen, K., van Schingen, M., Rauhaus, A. & T. Ziegler (2018) Testing the applicability of ¹⁵N isotopic marker in skin tissue to distinguish between captive and wild monitor lizards. – Biawak 12(2): 73-83.
299. Ziegler, T., Ngo, H. N., Pham, A. V., Nguyen, T. T., Le, M. D. & T. Q. Nguyen (2018): A new species of Parafimbrios from northern Vietnam (Squamata: Xenodermatidae). – Zootaxa 4527(2): 269-276.
298. Ngo, H. N., Nguyen, T. Q., Nguyen, T. V., Van Schingen, M. & T. Ziegler (2018): Microhabitat selection and communal nesting in the insular Psychedelic Rock Gecko, Cnemaspis psychedelica, in southern Vietnam with updated information on trade. – Nature Conservation 31: 1-16.
297. Pham, C. T., Le, M. D., Ngo, H. T., Ziegler, T. & T. Q. Nguyen (2018): A new species of Limnonectes (Amphibia: Anura: Dicroglossidae) from Vietnam. – Zootaxa 4508(1): 115-130.
296. Nguyen, T. V., Pham, C. T., Do, D. T., Ziegler, T. & T. Q. Nguyen (2018): New records and first description of females of the large-eared frog, Odorrana gigatympana (Orlov, Ananjeva & Ho, 2006) (Anura: Ranidae), from Vietnam. – Russian Journal of Herpetology 25(3): 239-244.
295. Souvannasy, P., Luu, V. Q., Soudthichak, S., Wayakone, S., Le, M., Nguyen, T. Q. & T. Ziegler (2018): Evidence of another overlooked Siamese crocodile (Crocodylus siamensis) population in Khammouane Province, central Lao PDR. Crocodile Specialist Group Newsletter 37(3): 6-8.
294. Nguyen, T. T., Ziegler, T., Rauhaus, A., Nguyen, T. Q., Tran, D. T. A., Wayakone, S., Luu, V. Q., Vences, M. & M. D. Le (2018): Genetic screening of Siamese crocodiles (Crocodylus siamensis) in Laos and Vietnam: Identifying purebred individuals for conservation and release programs. Crocodile Specialist Group Newsletter 37(3): 8-14.
293. Luu, V. Q., Bonkowski, M., Nguyen, T. Q., Le, M. D., Calame, T. & T. Ziegler (2018): A new species of Lycodon Boie, 1826 (Serpentes: Colubridae) from central Laos. – Revue Suisse de Zoologie 125(2): 263-276.
292. Ninh, H. T., Nguyen, T. T., Pham, C. T., Nguyen, T. Q., Orlov, N. L., Rauhaus, A. & T. Ziegler (2018): First record of the Vietnam Flying Frog, Rhacophorus calcaneus Smith, 1924, from Khanh Hoa Province, including the first molecular identification and morphological description of larval stages. – Revue Suisse de Zoologie 125(2): 231-238.
291. Behler, N., Kopsieker, L., Staniewicz, A., Darmasyah, S., Stuebing, R. & T, Ziegler (2018): Population size, demography and diet of the Siamese crocodile, Crocodylus siamensis (Schneider, 1801) in the Mesangat swamp in Kalimantan, Indonesia. – Raffles Bulletin of Zoology 66: 506-516.
290. Nguyen, T. Q., Nguyen, T. V., Pham, C. T., Ong, A. V. & T. Ziegler (2018): New records of snakes (Squamata: Serpentes) from Hoa Binh Province, northwestern Vietnam. – Bonn zoological Bulletin 67(1): 15-24.
289. Nguyen, T. Q., Ngo, H. N. & T. Ziegler (2018): The reptile fauna of the Cat Ba Archipelago: An unique biological resource with a high level of local endemism and important conservation significance. S. 48-54 in Proceeding of a scientific workshop on “Values and Solutions to conserve biodiversity in Ha Long Bay and Cat Ba Archipelago”, IUCN Vietnam, Gland, Switzerland: IUCN: 124 S.
288. Ziegler, T. & M. D. Le (2018): New Records of the Blue-tailed Monitor, Varanus doreanus (Meyer, 1874), Including a Maximum Size Record. – Biawak 12(1): 48–53.
287. Pham, C. T., Nguyen, T. Q., Nguyen, T. T., Nguyen, V. T., van Schingen, M. & T. Ziegler (2018): First record of Liuixalus feii Yang, Rao & Wang, 2015 (Anura: Rhacophoridae) from Vietnam and taxonomic assignment of L. jinxiuensis Li, Mo, Xie & Jiang, 2015. – Russ. J. Herpetol. 25(2): 121-125.
286. Ziegler, T., Pham, C. T., Nguyen, T. Q., Berger, M., Ngo, H. T. & M. D. Le (2018): Erstnachweis der Weißlippen-Bambusotter (Trimeresurus albolabris) für Haiphong: Dokumentation einer ungewöhnlichen Farbvariante von der Insel Bach Long Vy im Golf von Tonkin, Nordvietnam und Identifizierung zuvor fehlbestimmter T. rubeus und T. cardamomensis aus Südvietnam. - Sauria 40(2): 1-24.
285. Ziegler, T., Marcec, R., Vardukyan, D., Nguyen, T. Q., Le, M. D. & M. Bernardes (2018): First record of longevity in Tylototriton ziegleri (Urodela: Salamandridae). – Alytes 36(1-4): 328-338.
284. Nguyen, T. V., Nguyen, T. Q., Pham, C. T. & T. Ziegler (2017): First country record of Opisthotropis maculosa Stuart et Chuyankern, 2007 from Vietnam. – Russian Journal of Herpetology, 25(1): 74-78.
283. Nguyen, T. Q., Ngo, H. N., Pham, C. T., Van, H. N., Ngo, C. D., van Schingen, M. & T. Ziegler (2018): First population assessment of the Asian water dragon (Physignathus cocincinus Cuvier, 1829) in Thua Thien Hue Province, Vietnam. – Nature Conservation 26: 1-14.
282. Rauhaus, A., Niggemann, C. & T. Ziegler (2018): Haltung, Reproduktion und Larvalentwicklung der Knochenkopfkröte Ingerophrynus galeatus (Günther, 1864) aus Vietnam. – Sauria 40(1): 3-24.
281. Pham, A. V., Tu, H. V., Nguyen, T. V., Ziegler, T. & T. Q. Nguyen (2018): New records and an updated list of lizards from Son La Province, Vietnam. – Herpetology Notes 11: 209-216.
280. Ziegler, T, David, P., Ziegler, T. N., Pham, C. T., Nguyen, T. Q. & M. D. Le (2018): Morphological and molecular review of Jacob’s Mountain Stream Keelback Opisthotropis jacobi Angel & Bourret, 1933 (Squamata: Natricidae) with description of a sibling species from northern Vietnam. Zootaxa, 4374(4): 476-496.

2017

279. Nguyen, T. T., Ngo, H. T., Nguyen, T. Q., Ziegler, T., van Schingen, M., Nguyen, V. H. T. & M. D. Le (2017): Application of microsatellite to population genetic study of the Crocodile lizard (Shinisaurus crocodilurus Ahl, 1930) in Vietnam. – Tap Chi Khoa Hoc 33: 100-108.
278. Nguyen, T. T., Pham, C. T., Nguyen, T.Q., Ninh, H. T. & T. Ziegler (2017): A new species of Rhacophorus (Amphibia: Anura: Rhacophoridae) from Vietnam. - Asian Herpetological Research, 8(4): 221-234.
277. Luu, V. Q., Dung, T. V., Nguyen, T. Q., Le, M. D. & T. Ziegler (2017): A new species of the Cyrtodactylus irregularis complex (Squamata: Gekkonidae) from Gia Lai Province, Central Highlands of Vietnam. Zootaxa, 4362 (3): 385-404.
276. Meiri, S., Bauer^,A. M., Allison, A., Castro-Herrera, F., Chirio, L., Colli, G., Das, I., Doan, T. M., Glaw, F., Grismer, L. L., Hoogmoed, M., Kraus, F., LeBreton, M., Meirte, D., Nagy, Z. T., Nogueira, C. de C., Oliver, P., Pauwels, O. S. G., Pincheira-Donoso, D., Shea, G., Sindaco, R., Tallowin, O. J. S., Torres-Carvajal, O., Trape, J. F., Uetz, P., Wagner, P., Wang, Y., Ziegler, T. & U. Roll (2017): Extinct, obscure or imaginary: the lizard species with the smallest ranges. – Diversity and Distribution 2017: 1-12.
275. Ziegler, T. (2017): Haltung von Waranen, Erhaltungszuchten und die Rolle der Zoologischen Gärten. In: Schepp, U., Kuich-Van Endert, Martens, H. & C. Paulsch (Eds.): Der Handel mit exotischen Reptilien in Deutschland am Beispiel der Warane (Familie Varanidae). – Naturschutz und Biologische Vielfalt, Bonn, Heft 159: 93-117.
274. Nguyen, T. Q., Pham, A. V., Ziegler, T., Ngo, H. T. & M. D. Le (2017): A new species of Cyrtodactylus (Squamata: Gekkonidae) and the first record of C. otai from Son La Province, Vietnam. – Zootaxa 4341(1): 25-40.
273. Ziegler, T. & T. Q. Nguyen (2017): German-Vietnamese long-term cooperation between the Cologne Zoo and the Institute of Ecology and Biological Resources in terms of herpetodiversity research and conservation. - Proceedings of the 7^th National Scientific Conference on Ecology and Biological Resources, Publishing House for Science and Technology, Hanoi (ISBN: 978-604-913-615-3): 1076–1084.
272. Ziegler, T., Ziegler, T.N., Peusquens, J., David, P., Vu, T.N., Pham, C.T., Nguyen, T.Q. & M.D. Le (2017) Expanded morphological definition and molecular phylogenetic position of the Tam Dao mountain stream keelback Opisthotropis tamdaoensis (Squamata: Natricidae) from Vietnam. - Revue Suisse de Zoologie 124(2): 377-389.
271. Nguyen, T. T., Nguyen, T. V., Ziegler, T., Pasmans, F. & A. Martel (2017): Trade in wild anurans vectors the urodelan pathogen Batrachochytrium salamandrivorans into Europe. – Amphibia-Reptilia DOI:10.1163/15685381-00003125
270. Bernardes, M., Pham, C. T., Nguyen, T. Q., Le, M. D., Bonkowski, M. & T. Ziegler (2017): Comparative morphometrics and ecology of a newly discovered population of Tylototriton vietnamensis from northeastern Vietnam including remarks on species conservation. – Salamandra 53(3): 451-457.
269. Pham, A. V., Nguyen, T. Q., Ziegler, T. & T. T. Nguyen (2017): New records of tree frogs (Anura: Rhacophoridae: Rhacophorus) from Son La Province, Vietnam. – Herpetology Notes 10: 379-386.
268. Lourenco, W. R., Luu, V. Q., Nguyen, T. Q. & T. Ziegler (2017): First reported case of cannibalism in Lychas aberlenci Lourenço, 2013 from the Rainforest of Laos (Scorpiones: Buthidae). – Revista Iberica de Aracnologia 30: 159-161.
267. Do, D. T., Ngo, C. D., Ziegler, T. & T. Q. Nguyen (2017): First record of Lycodon cardamomensis Daltry & Wüster, 2002 (Squamata: Colubridae) from Vietnam. - Russ. J. Herpetol. 24(2): 167-170.
266. Pham, C. T., An, H. T., Herbst, S., Bonkowski, M., Ziegler, T. & T. Q. Nguyen (2017): First report on the amphibian fauna of Ha Lang karst forest, Cao Bang Province, Vietnam. – Bonn zool. Bull. 66(1): 37-53.
265. Vences, M., Brown, J. L., Lathrop, A., Rosa, G. M., Cameron, A., Crottini, A., Dolch, R., Edmonds, D., Freeman, K. L. M., Glaw, F., Grismer, L. L., Litvinchuk, S., Milne, M. G., Moore, M., Solofo, J. F., Noel, J., Nguyen, T. Q., Ohler, A., Randrianantoandro, C., Raselimanana, A. P., Van Leeuwen, P., Wogan, G. O. U., Ziegler, T., Andreone, F. & R. W. Murphy (2017): Tracing a toad invasion: lack of mitochondrial DNA variation, haplotype origins, and potential distribution of introduced Duttaphrynus melanostictus in Madagascar. – Amphibia-Reptilia 38 (2): 197-207.
264. Ziegler, T., Rauhaus, A. & F. Schmidt (2017): Review of crocodiles in Zoological Gardens with a focus on Europe. – Der Zoologische Garten 86(1-6): 18-40.
263. Pham, C. T., Le, M. D., Nguyen, T. T., Ziegler, T., Wu, Z. J. & T. Q. Nguyen (2017): A new species of Limnonectes (Amphibia: Anura: Dicroglosidae) from Vietnam. – Zootaxa 4269(4): 548-558.
262. Luu, V. Q., Nguyen, T. Q., Le, M. D., Bonkowski, M. & T. Ziegler (2017): A new karst dwelling species of the Gekko japonicus group (Squamata: Gekkonidae) from central Laos. – Zootaxa 4263(1): 179-193.
261. Pham, A. V., Pham, C. T., Hoang, N. V., Ziegler, T. & T. Q. Nguyen (2017): New records of amphibians and reptiles from Ha Giang Province, Vietnam. – Herpetology Notes 10: 183-191.
260. Bernardes, M., Rauhaus, A., Michel, C., Pham, C. T., Nguyen, T. Q., Le, M. D., Pasmans, F., Bonkowski, M. & T. Ziegler (2017): Larval development and breeding ecology of Ziegler’s Crocodile Newt, Tylototriton ziegleri Nishikawa, Matsui and Nguyen, 2013 (Caudata: Salamandridae), compared to other Tylototriton representatives. – Amphibian and Reptile Conservation 11(1): 72-87.
259. Egert, J., Luu, V. Q., Nguyen, T. Q., Le, M. D., Bonkowski, M. & T. Ziegler (2017): First record of Gracixalus quyeti (Amphibia: Anura: Rhacophoridae) from Laos: molecular consistency versus morphological divergence between populations on western and eastern side of the Annamite Range. – Revue Suisse de Zoologie 124(1): 47-51.

2016

258. Ceriaco, L. M. P., Gutierrez, E. E., Dubois, A., Abdala, C. C., Alqarni, A. S., Adler, K., Adriano, E. A., Aescht, E., Agarwal, I., Agatha, S., Agosti, D., Aguiar, A. J. C., Aguiar, J. J. M., Ahrens, D., Aleixo, A., Alves, M. J., do Amaral, F. R., Ananjeva, N., Andrade, M. C., de Andrade, M. B., Andreone, F., Aquino, P. P. U., Araujo, P. B., Arnaud, H., Arroyave, J., Arthofer, W., Artois, T. J., Astúa, D., Azevedo, C., Bagley, J. C., Baldo, D., Barber-James, H. M., Bärmann, E. V., Bastos-Silveira, C., Bates, M. F., Bauer, A. M., Bauer, F., Benine, R. C., Bennett, D. J., Bentlage, B., Berning, B., Bharti, D., Biondo, C., Birindelli, J., Blick, T., Boano, G., Bockmann, F. A., Bogdanowicz, W., Böhme, W., Borgo, E., Borkin, L., Bornschein, M. R., Bour, R., Branch, W. R., Brasileiro, C. A., Braun, J. K., Bravo, G. A., Brendonck, L., Brito, G. R. R., Britto, M. R., Buckup, P. A., Burckhardt, D., Burkhardt, U., Busack, S. D., Campos, L. A., Canard, A., Cancello, E. M., Caramaschi, U., Carpenter, J. M., Carr, M., Carrenho, R., Cartaxana, A., Carvajal, M. A., Carvalho, G. S., de Carvalho, M. R., Chaabane, A., Chagas, C., Chakrabarty, P., Chandra, K., Chatzimanolis, S., Chordas III, S. W., Christoff, A. U., Cianferoni, F., Claramunt, S., Cogãlniceanu, D., Collette, B. B., Colli, G. R., Colston, T. J., Conradie, W., Constant, J., Constantino, R., Cook, J. A., Cordeiro, D., Correia, A. M., Cotterill, F. P. D., Coyner, B., Cozzuol, M. A., Cracraft, J., Crottini, A., Cuccodoro, J., Curcio, F. F., d’Udekem d’Acoz, C., D’Elía, G., D’Haese, C., Das, I., Datovo, A., Datta-Roy, A., David, P., Day, J. G., Daza, J. D., de Bisthoven, L. J., de la Riva de la Viña, I. J., de Muizon, C., de Pinna, M., de Q. Piacentini, V., de Sá, R. O., de Vivo, M., Decher, J., Dekoninck, W., Delabie, J. H. C., Delfino, M., Delmastro, G. B., Delsinne, T., Denys, C., Denzer, W., Desutter-Grandcolas, L., Deuti, K., de Resbecq, T. D., Dario, F. D., Dinets, V., DoNascimiento, C., Donoso, D. A., Doria, G., Drewes, R. C., Drouet, E., Duarte, M., Durette-Desset, M.-C., Dusoulier, F., Dutta, S. K., Engel, M. S., Epstein, M., Escalona, M., Esselstyn, J. A., Eto, K., Faivovich, J., Falaschi, R. L., Falin, Z. H., Faundez, E. I., Feijó, A., Feitosa, R. M., Fernandes, D. S., Fikáček, M., Fisher, B. L., FitzPatrick, M. J., Forero, D., Franz, I., Freitag, H., Frétey, T., Fritz, U., Gallut, C., Gao, S., Garbino, G. S. T., Garcete-Barrett, B. R., García-Prieto, L., García, F. J., Garcia, P. C. A., Gardner, A. L., Gardner, S. L., Garrouste, R., Geiger, M. F., Giarla, T. C., Giri, V., Glaubrecht, M., Glotzhober, R. C., Godoi, F. S. P., Gofas, S., Gonçalves, P. R., Gong, J., Gonzalez, V. H., González-Oreja, J. A., González-Santillán, E., González-Soriano, E., Goodman, S. M., Grandcolas, P., Grande, L., Greenbaum, E., Gregorin, R., Grillitsch, H., Grismer, L. L., Grootaert, P., Grosjean, S., Guarino, F. M., Guayasamin, J. M., Guénard, B., Guevara, L., Guidoti, M., Gupta, D., Gvoždík, V., Haddad, C. F. B., Hallermann, J., Hassanin, A., Hausmann, A., Heaney, L. R., Heinicke, M. P., Helgen, K. M., Henle, K., Hirschmann, A., Holmes, M. W., Hołyńska, M., Hołyński, R., Hormiga, G., Huber, B. A., Hugot, J.-P., Hutterer, R., Iskandar, D., Iverson, J. B., Jäger, P., Janssen, R., Jerep, F., Jocqué, R., Jungfer, K.-H., Justine, J.-L., Kamei, R. G., Kamiński, M. J., Karner, M., Kearney, T., Khot, R., Kieckbusch, M., Köhler, J., Koepfli, K.-P., Kondorosy, E., Krogmann, L., Krolow, T. K., Krüger, M., Kucharzewski, C., Kullander, S. O., Kumar, S., Kupfer, A., Kuramoto, M., Kurina, O., Kury, A., Kvist, S., La Marca, E., La Terza, A., LaVal, R., Lacher, T. E., Lamas, C. J. E., Lambert, M. R., Landry, B., Langeani, F., Langone, J. A., Lattke, J. E., Lavilla, E. O., Leenders, T., Lees, D. C., Leite, Y. L. R., Lehmann, T., Lhano, M. G., Lim, B. K., Lin, X., Löbl, I., de Lucena, C. A. S., de Lucena, Z. M. S., Lucinda, P., Lujan, N. K., Luporini, P., Luz, D. R., Lynch, J. D., Machado, L. F., Mahony, S., Malabarba, L. R., Manuel-Santos, M., Marinho-Filho, J., Marini, M. Â., Marques, A. C., Marques, M. P., Mateus, O., Matsui, M., Mazuch, T., McCranie, J., McKellar, R. C., McMahan, C. D., Mecke, S., Meißner, K., Mendoza-Becerril, M. A., Mendoza-Palmero, C. A., Merker, S., Mezzasalma, M., Midgley, J. M., Miller, J., Miller, M. J., Mincarone, M. M., Minet, J., Miralles, A., Miranda, T. P., Missoup, A. D., Modrý, D., Molinari, J., Monadjem, A., Montreuil, O., Moratelli, R., Moreira, C. R., Moreira, F. F. F., Mourer-Chauviré, C., Mulieri, P. R., Munroe, T. A., Naomi, S.-I., Nascimento, F., Nässig, W. A., Neifar, L., Netto-Ferreira, A. L., Niamir, A., Nielsen, S. V., Nihei, S. S., Nistri, A., Oceguera-Figueroa, A., Odierna, G., Ohler, A., Ojanguren-Affilastro, A. A., de Oliveira, F. F., de Oliveira, M. L., Müller, O., de Oliveira, P., Siqueira Oliveira, S., Olson, L. E., Ong’ondo, G. O., Orlov, N., Ornelas-García, C. P., Ortega, H., Ortega-Andrade, M., Ota, H., Pariselle, A., Passos, A., Pastana, M. N. L., Patterson, B. D., Patitucci, L. D., Patton, J. L., Pavan, A. C., Pavan, S. E., Pavia, M., Peloso, P. L. V., Pelzer, A., Pereyra, M. O., Perez-Gonzalez, A., Pérez-Luz, B., Pérez, C. H. F., Peterhans, J. K., Peterson, A. T., Pétillon, J., Philips, T. K., Picariello, O., Pie, M. R., Pikart, T. G., Pine, R. H., Pinheiro, U., Pinho, L. C., Pinto, Â. P., Costa, L. P., Poggi, R., Pombal Jr., J. P., Prabhu, M., Prendini, E., Prendini, L., Purushothaman, J., Pyron, R. A., Quintela-Alonso, P., Quinteros, A. S., Quiroga-Carmona, M., Rabitsch, W., Raffaëlli, J., Rage, J.-C., Rajaei, H., Ramírez, M. J., Raposo, M. A., Rapp Py-Daniel, L. H., J.-Y. Rasplus, Ratcliffe, B. C., Reddy, S., Reis, R. E., Remsen Jr., J. V., Richards, L. R., Richling, I., Robillard, T., Rocha, M. S., Rocha, R. M., Rödder, D., Rödel, M.-O., Rodrigues, F. P., Rodriguez, E., Rogers, D. S., Rojas-Runjaic, F. J. M., Röll, B., Rosenberger, A. L., Rowley, J., Roza, A. S., Ruedi, M., Salazar-Bravo, J., Salcedo, N. J., Samyn, Y., Santana, S. E., Santoferrara, L., Santos, B. F., Santos, C. M. D., Santos, J. C., Santos, M. P. D., Sargis, E. J., Schargel, W. E., Schätti, B., Scherz, M. D., Schlick-Steiner, B. C., Schmidt, R. C., Schmitt, T., Schodde, R., Schoeman, C. S., Schweiger, S., Schwertner, C. F., Seamark, E. C. J., Semedo, T. B. F., Shin, M. K., Siler, C. D., Silveira, L. F., Simison, W. B., Simões, M., Sites, J. W., Smith, B. T., Smith, K. T., Song, W., Soulier-Perkins, A., Sousa, L. M., Sparks, J. S., Stampar, S. N., Steiner, F. M., Steyer, J.-S., Stiassny, M. L. J., Stoeck, T., Stopiglia, R., Streicher, J. W., Sturaro, M. J., Stys, P., Swierk, L., Taeger, A., Takiya, D. M., Taphorn, D. C., Tavares, M., da C. Tavares, V., Taylor, P. J., Tello, J. G., Teta, P., Tillack, F., Timm, R. M., Tokaryk, T., Tominaga, A., Tonini, J. F. R., Tornabene, L., Torres-Carvajal, O., Townsend, J., Trape, J.-F., Rodrigues, M. T., Trusch, R., Tschopp, E., Uhl, D., Upham, N. S., Vacher, J.-P., Valdesalici, S., Bocxlaer, B. V., Cakenberghe, V. V., van de Kamp, T., Van de Velde, I., Van den Spiegel, D., Vanhove, M. P. M., Vasudevan, K., Veerappan, D., Velazco, P. M., Verdade, V. K., Verheyen, E., Vieira, L. M., Victoriano, P. F., Vitt, L. J., Wagner, P., Watkins-Colwell, G. J., Weisse, T., Werneck, F. P., Wheeler, W. C., Wilson, D. E., Wollenberg Valero, K. C., Wood, Jr., P. L., Woodman, N., Quetzallin, N., H.-D. Y., Yoshikawa, N., Zaher, H., Ziegler, T., Zima, J., Zink, R. M. & G. Zug (2016): Photography-based taxonomy is inadequate, unnecessary, and potentially harmful for biological sciences. – Zootaxa 4196(3): 435-445.
257. Ziegler, T. (2016): Two decades of herpetodiversity research in Vietnam and Laos: A review of a German-Vietnamese long-term cooperation. - Proceedings of the 3^rd National Scientific Conference on Amphibians and Reptiles in Vietnam, Hanoi, 26 November 2016, Publishing House for Science and Technology: 5-18.
256. van Schingen, M., Ha, Q. Q., Pham, C. T., Le, T. Q., Nguyen, T. Q., Bonkowski, M. & T. Ziegler (2016): Discovery of a new crocodile lizard population in Vietnam: Population trends, future prognoses and identification of key habitats for conservation. - Revue Suisse de Zoologie 132(2): 241-251.
255. Ngo, H. N., Nguyen, T. Q., Nguyen, T. V., Barsch, F., Ziegler, T. & M. van Schingen (2016): First population assessment of the endemic insular Psychedelic rock gecko (Cnemaspis psychedelica) in southern Vietnam with implications for conservation. – Amphibian & Reptile Conservation 10(2): 18-26.
254. Nguyen, T. Q., Pham, C. T., Nguyen, T. T., Ngo, H. N. & T. Ziegler (2016): A new species of Theloderma (Amphibia: Anura: Rhacophoridae) from Vietnam. – Zootaxa 4168(1): 171-186.
253. Le, D. T., Nguyen, T. Q., Le, M. D. & T. Ziegler (2016): A new species of Cyrtodactylus (Squamata: Gekkonidae) from Ninh Binh Province, Vietnam. – Zootaxa 4162(2): 268-282.
252. Le, D. T., Nguyen, T. Q., Le, M. D. & T. Ziegler (2016): A new species of Cyrtodactylus (Squamata: Gekkonidae) from Ninh Binh Province, Vietnam. – Zootaxa 4162(2): 268-282.
251. ten Hagen, L., Rodriguez, A. Menke, N., Göcking, C., Bisping, M., Frommolt, K.-H., Ziegler, T., Bonkowski, M. & M. Vences (2016): Vocalizations in juvenile anurans: common spadefoot toads (Pelobates fuscus) regularly emit calls before sexual maturity. – Sci Nat 103:75 DOI 10.1007/s00114-016-1401-0
250. Nguyen, T.Q., Ngo, H., van Schingen, M. & T. Ziegler (2016): Goniurosaurus catbaensis. The IUCN Red List of Threatened Species 2016: e.T18917684A18917688.
249. Nguyen, T.Q., Ngo, H., Ziegler, T. & M. van Schingen (2016): Cnemaspis psychedelica. The IUCN Red List of Threatened Species 2016: e.T97210381A97210384.
248. Auliya, M., Altherr, S., Ariano-Sanchez, D., Baard, E. H., Brown, C., Cantu, J.-C., Gentile, G., Gildenhuys, P., Henningheim, E., Hintzmann. J., Kanari, K., Krvavac, M., Lettink, M., Lippert, J., Luiselli, L., Nilson, G., Nguyen, T. Q., Nijman, V., Parham, J., Pasachnik, S. A., Pedrono, M., Rauhaus, A., Rueda, D., Sanchez, M.-E., Schepp, U., van Schingen, M, Schneeweiss, N., Segniagbeto, G. H., Shepherd, C., Stoner, S., Somaweera, R., Sy, E., Türkosan, O., Vinke, S., Vinke, T., Vyas, R., Williamson, S. & T. Ziegler (2016): Trade in live reptiles, its impact on wild populations, and the role of the European market. – Biological Conservation 204(2016): 103-119.
247. van Schingen, M., Le, M. D., Ngo, H. T., Pham, C. T., Ha, Q. Q., Nguyen,T. Q. & T. Ziegler (2016): Is there more than one Crocodile Lizard? An integrative taxonomic approach reveals Vietnamese and Chinese Shinisaurus crocodilurus represent separate conservation and taxonomic units. – Der Zoologische Garten, N.F. 85: 240-260.
246. Ziegler, T., Rauhaus, A., Nguyen, K.V. & T.Q. Nguyen (2016): Building of a conservation breeding facility for the Psychedelic Rock Gecko (Cnemaspis psychedelica) in southern Vietnam. – Der Zoologische Garten, N.F. 85: 224-239.
245. Ngo, H. N., Ziegler, T., Ngyuen, T. Q., Pham, C. T., Nguyen, T. T., Le, M. D. & M. van Schingen (2016): First population assessment of two cryptic Tiger geckos (Goniurosaurus) from northern Vietnam: Implications for conservation. – Amphibian and Reptile Conservation 10(1): 34-45.
244. Ziegler, T., Rauhaus, A. & I. Gill (2016): A preliminary review of monitor lizards in Zoological Gardens. – Biawak 10(1): 26-35.
243. Rauhaus, A. & T. Ziegler (2016): Philippine crocodile (Crocodylus mindorensis) target training at Cologne Zoo. – Crocodile Specialist Group Newsletter 35(2): 17-19.
242. Ziegler, T., Botov, A., Nguyen, T. T., Bauer, A. M., Brennan, I. G., Ngo, H. T. & T. Q. Nguyen (2016): First molecular verification of Dixonius vietnamensis Das, 2004 (Squamata: Gekkonidae) with the description of a new species from Vinh Cuu Nature Reserve, Dong Nhai Province, Vietnam. – Zootaxa 4136(3): 553-566.
241. Böhme, W., Koch, A. & T. Ziegler (2016): Comment on the proposed conservation of Tupinambis indicus Daudin, 1832 (currently Varanus indicus; Reptilia, Squamata) by replacement of the neotype (Case 3676; see BZN 72: 134-140). – Bull. Zool. Nomenclature 73(1): 55-58.
240. Pham, C. T., Nguyen, T. Q., Bernardes, M., Nguyen, T. T. & T. Ziegler (2016): First records of Bufo gargarizans Cantor, 1842 and Odorrana lipuensis Mo, Chen, Wu, Zhang et Zhou, 2015 (Anura: Bufonidae, Ranidae) from Vietnam. – Russ. J. Herpetology 23(2): 103-107.
239. Guo, P., Liu, Q., Zhu, F., Zhong, G. H., Chen, X., Myers, E. A., Che, J., Zhang, L., Ziegler, T., Nguyen, T. Q. & F. T. Burbrink (2016): Complex longitudinal diversification across South China and Vietnam in Stejneger’s pit viper, Viridovipera stejnegeri (Schmidt, 1925) (Reptilia: Serpentes: Viperidae). – Molecular Ecology 25: 2920-2936.
238. Luu, V. Q., Bonkowski, M., Nguyen, T. Q., Le, M. D., Ngo, H. T., Schneider, N. & T. Ziegler (2016): Evolution in karst massifs: Cryptic diversity among bent-toed geckos along the Truong Son Range with descriptions of three new species and one new country record from Laos. – Zootaxa 4107(2): 101-140.
237. Gawor, A., Pham, C. T., Nguyen, T. Q., Nguyen, T. T., Schmitz, A. & T. Ziegler (2016): The herpetofauna of the Bai Tu Long National Park, northeast Vietnam. – Salamandra 52(1): 23-41.
236. Van Schingen, M., Ziegler, T., Boner, M., Streit, B., Nguyen, T. Q. Crook, V. & S. Ziegler (2016): Can isotope markers differentiate between wild and captive reptile populations? A case study based on crocodile lizards (Shinisaurus crocodilurus) from Vietnam. – Global Ecology and Conservation 6: 232-241.
235. Ziegler, T., Rauhaus, A., Mutschmann, F., Dang, P. H., Pham, C. T. & T. Q. Nguyen (2016): Building up of keeping facilities and breeding projects for frogs, newts and lizards at the Me Linh Station for Biodiversity in northern Vietnam, including improvement of housing conditions for confiscated reptiles and primates. – Der Zoologische Garten 85: 91-120.
234. Rowley, J. J. L., Tran, D. T. A., Le, D. T. T., Dau, V. Q., Peloso, P. L. V., Nguyen, T. Q., Hoang, H. D., Nguyen, T. T. & T. Ziegler (2016): Five new, microendemic Asian Leaf-litter frogs (Leptolalax) from the southern Annamite mountains, Vietnam. – Zootaxa 4085(1): 63-102.
233. Pham, A. V., Le, D. T., Pham, C. T., Nguyen, S. L. H., Ziegler, T. & T. Q. Nguyen (2016): Two additional records of megophryid frogs, Leptobrachium masatakasatoi Matsui, 2013 and Leptolalax minimus (Taylor, 1962), for the herpetofauna of Vietnam. – Revue Suisse de Zoologie 123(1): 35-43.
232. Pham, C. T., Nguyen, T. Q., Le, M. D., Bonkowski, M. & T. Ziegler (2016): A new species of Odorrana (Amphibia: Anura: Ranidae) from Vietnam. – Zootaxa 4084 (3): 421-435.
231. Pham, C. T., Nguyen, T. Q., Hoang, C. V. & T. Ziegler (2016): New records and an updated list of amphibians from Xuan Lien Nature Reserve, Thanh Hoa Province, Vietnam. – Herpetology Notes 9: 31-41.
230. Luu, V. Q., Nguyen, T. Q., Le, M. D., Bonkowski, M. & T. Ziegler (2016): A new species of karst-dwelling bent-toed gecko (Squamata: Gekkonidae) from Khammouane Province, central Laos. - Zootaxa 4079 (1): 087–102.
229. Luu, V. Q., Calame, T., Nguyen, T. Q., Le, M. D., Bonkowski, M. & T. Ziegler (2015): Cyrtodactylus rufford, a new cave-dwelling bent-toed gecko (Squamata: Gekkonidae) from Khammouane Province, central Laos. – Zootaxa 4067(2): 185-199.

2015

228. Nguyen, T. Q., Pham, A. V., Nguyen, S. L. H., Le, M. D. & T. Ziegler (2015): First country record of Parafimbrios lao Teynié, David, Lottier, Le, Vidal et Nguyen, 2015 (Squamata: Xenodermatidae) for Vietnam. – Russian Journal of Herpetology 22(4): 297-300.
227. Luu, V.Q., Calame, T., Nguyen, T.Q., Bonkowski, M. & T. Ziegler (2015): A new species of Cyrtodactylus (Squamata: Gekkonidae) from the limestone forest of Khammouane Province, central Laos. Zootaxa 4058(3): 388-402.
226. Ziegler, T., Rauhaus, A., Tran, T. D., Pham, C. T., Van Schingen, M., Dang, H. P. Le, M. D. & T. Q. Nguyen (2015): Die Amphibien- und Reptilienfauna der Me-Linh-Biodiversitätsstation in Nordvietnam. – Sauria 37(4): 11-44.
225. Botov, A., Phung, T. M., Nguyen, T. Q., Bauer, A. M., Brennan, I. G. & T. Ziegler (2015): A new species of Dixonius (Squamata: Gekkonidae) from Phu Quy Island, Vietnam. – Zootaxa 4040(1): 048-058.
224. Ziegler, T., Hauswaldt, S. & M. Vences (2015): The necessity of genetic screening for proper management of captive crocodile populations based on the examples of Crocodylus suchus and C. mindorensis. – Journal of Zoo and Aquarium Research 3(4): 123-127.
223. Ziegler, T., Nguyen, T. Q. & W. Lourenco (2015): The first observation of aggregation in the buthid scorpion Lychas mucronatus (Fabricius, 1798). – ARACHNIDA Rivista Aracnologia Italiana Vol. IV: 35-40.
222. Ziegler, T., Luu, V. Q., Soudthichak, S. & T. Q. Nguyen (2015): Rediscovery of the Siamese crocodile (Crocodylus siamensis) in Khammouane Province, central Lao PDR. – Crocodile Specialist Newsletter 34(3): 11-13.
221. Ziegler, T. & A. Rauhaus (2015): Induced natural breeding of the Philippine crocodile (Crocodylus mindorensis) at the Cologne Zoo. – Crocodile Specialist Newsletter 34(3): 9-11.
220. Luu, V. Q., Calame, T., Nguyen, T. Q., Le, M. D. & T. Ziegler (2015): Morphological and molecular review of the Gekko diversity of Laos with descriptions of three new species. – Zootaxa 3986(3): 279-306.
219. Nguyen, T. Q., Le, M. D., Pham, A. V., Ngo, H. N., Hoang, C. V., Pham, C. T. & T. Ziegler (2015): Two new species of Cyrtodactylus (Squamata: Gekkonidae) from the karst forest of Hoa Binh Province, Vietnam. – Zootaxa 3985(3): 375-390.
218. Le, D. T., Pham, A. V., Pham, C. T., Nguyen, S, H. L., Ziegler, T. & T. Q. Nguyen (2015): Review of the genus Sinonatrix in Vietnam with a new country record of Sinonatrix yunnanensis Rao et Yang, 1998. – Russian Journal of Herpetology, 22(2): 84-88.
217. Pham, C. T., Dogra. A., Gawor, A., Rauhaus, A., Kloeble, G., Nguyen, T. Q. & T. Ziegler (2015): First record of Amolops cremnobatus from Thanh Hoa Province, Vietnam, including an extended tadpole description and the first larval staging for Amolops. – Salamandra 51(2): 111-120.
216. Ziegler, T., Rauhaus, A., Nguyen, T. Q. & K. V. Nguyen (2015): Südlichster Nachweis von Gekko badenii Szczerbak & Nekrasova, 1994, mit Bemerkungen zur Herpetofauna der Hon Me-Auffangstation in der Provinz Kien Giang, Südvietnam. – Sauria 37(2): 3-14.
215. Ziegler, T. (2015): In situ and ex situ reptile projects of the Cologne Zoo: implications for research and conservation of South East Asia’s herpetodiversity. - International Zoo Yearbook 49: 8–21.
214. Van Schingen, M., Schepp, U., Pham, C. T., Nguyen, T. Q. & T. Ziegler (2015): Last Chance to See? A Review of the Threats to and Use of the Crocodile Lizard. - Traffic Bulletin 27(1): 19-26.
213. Luu, V. Q., Nguyen, T. Q., Lehmann, T., Bonkowski, M. & T. Ziegler (2015): New records of the horned pitviper, Protobothrops cornutus (Smith, 1930) (Serpentes: Viperidae), from Vietnam with comments on morphological variation. – Herpetology Notes 8: 149-152.
212. Le, D. T., Pham, A. V., Nguyen, S, H. L., Ziegler, T. & T. Q. Nguyen (2015): First records of Megophrys daweimontis Rao and Yang, 1997 and Amolops vitreus (Bain, Stuart and Orlov, 2006) (Anura: Megophryidae, Ranidae) from Vietnam. – Asian Herpetol. Res. 6(1): 66-72.
211. Pham, A. V., Le, D. T., Nguyen, S. L. H., Ziegler, T. & T. Q. Nguyen (2015): New provincial records of skinks (Squamata: Scincidae) from northwestern Vietnam. – Biodiversity Data Journal 3: e4284 doi: 10.3897/BDJ.3.e4284
210. Geissler, P., Hartmann, T., Ihlow, F., Rödder, D., Poyarkov, N. A., Nguyen, T. Q., Ziegler, T. & W. Böhme (2015): The Lower Mekong: an insurmountable barrier to amphibians in southern Indochina? - Biological Journal of the Linnean Society.

2014

209. Nguyen, T. Q., An, H. T., Ngyuen, T. T., Luu, V. Q., Tran, T. T. & T. Ziegler (2014): New records of reptiles from northern Vietnam. - Abhandlungen des Naturwissenschaftlichen Vereins zu Bremen 47(2): 247-254.
208. Schmidt, F. & T. Ziegler (2014): Studbooks – Genetic and demographic analysis of small populations based on the examples of the European Studbooks for the African Dwarf Crocodiles (Osteolaemus tetraspis) and the Philippine crocodile (Crocodylus mindorensis): 121-125. In: Proceedings of the 23^rd Working Meeting of the Crocodile Specialist Group – IUCN – The World Conservation Union, Gland, Switzerland and Cambridge UK: 451 S.
207. Geissler, P., Poyarkov, N. A., Grismer, L., Nguyen, T. Q., An, H. T., Neang, T., Kupfer, A., Ziegler, T., Böhme, W. & H. Müller (2014): New Ichthyophis species from Indochina (Gymnophiona, Ichthyophiidae): 1. The unstriped forms with descriptions of three new species and the redescription of I. acuminatus Taylor, 1960, I. youngorum Taylor, 1960 and I. laosensis Taylor, 1969. – Organisms, Diversity and Evolution DOI 10.1007/s13127-014-0190-6
206. Van Schingen, M. & T. Ziegler (2014): First case of conjoined twins in the Quince Monitor Lizard Varanus melinus Böhme & Ziegler, 1997. – Herpetology Notes 7: 723-729.
205. Le, D. T., Pham, A. V., Nguyen, S. H. L., Ziegler, T. & T. Q. Nguyen (2014): Babina lini (Chou, 1999) and Hylarana menglaensis Fei, Ye et Xie, 2008, two additional anuran species for the herpetofauna of Vietnam. – Russian Journal of Herpetology 21(4): 315-321.
204. Nguyen, T. Q., Phung, T. M., Schneider, N., Botov, A., Tran, D. T. A. & T. Ziegler (2014): New records of amphibians and reptiles from southern Vietnam. – Bonn zool. Bulletin 63(2): 148-156.
203. Luu, V. Q., Calame, T., Nguyen, T. Q., Le, M. D., Bonkowski, M. & T. Ziegler (2014): A new species of the Gekko japonicus group (Squamata: Gekkonidae) from central Laos. – Zootaxa 3895(1): 73-88.
202. Schneider, M., Klein, B., Krämer, D., Knezevic, K., Tiflova, L., Vogt, S., Rauhaus, A., van der Straeten, K., Karbe, D., Sommerlad, R. & Ziegler, T. (2014): First observations on the courtship, mating, and nest visit behaviour of the Philippine crocodile (Crocodylus mindorensis) at the Cologne Zoo. - Journal of Zoo and Aquarium Research 2(4): 123-129.
201. Van Schingen, M., Pham, C. T., Thi, H. A., Bernardes, M., Hecht, V., Nguyen, T. Q., Bonkowski, M. & T. Ziegler (2014): Current status of the Crocodile Lizard Shinisaurus crocodilurus Ahl, 1930 in Vietnam with implications for conservation measures. – Revue Suisse de Zoologie 121(3): 425-439.
200. Sommerlad, R., Karbe, D., van der Straeten, K, Rauhaus A. & T. Ziegler (2014): Krokodile. In: Sachkunde Gefährliche Reptilien. – VDA/DGHT Sachkunde GbR, Mannheim: 84-135.
199. Pham, A. V., Le, D. T., Nguyen, S. H. L., Ziegler, T. & T. Q. Nguyen (2014): First records of Leptolalax eos Ohler, Wollenberg, Grosjean, Hendrix, Vences, Ziegler et Dubois, 2011 and Hylarana cubitalis (Smith, 1917) (Anura: Megophryidae, Ranidae) from Vietnam. Russ. J. Herpetology 21(3): 195-200.
198. Schneider, N., Nguyen, T. Q., Le, M. D., Nophaseud, L., Bonkowski, M. & T. Ziegler (2014): A new species of Cyrtodactylus (Squamata: Gekkonidae) from the karst forest of northern Laos. – Zootaxa 3835(1): 080-096.
197. Luu, V. Q., Calame, T., Nguyen, T. Q., Ohler, A., Bonkowski, M. & T. Ziegler (2014): First records of Gracixalus supercornutus (Orlov, Ho and Nguyen, 2004) and Rhacophorus maximus Günther, 1858 from Laos. – Herpetology Notes 7: 419-423.
196. Nguyen, T. Q., Botov, A., Le, D. M., Nophaseud, L., Zug, G., Bonkowski, M. & T. Ziegler (2014): A new species of Hemiphyllodactylus (Reptilia: Gekkonidae) from northern Laos. Zootaxa 3827 (1): 045-056.
195. Van Schingen, M., Ihlow, F., Nguyen, T. Q., Ziegler, T., Bonkowski, M., Wu, Z. & D. Rödder (2014): Potential distribution and effectiveness of the protected area network for the crocodile lizard, Shinisaurus crocodilurus (Reptilia: Squamata: Sauria). - Salamandra 50(2): 71-76.
194. Ziegler, T., Tran, D. T. A., Nguyen, T. Q., Perl, R. G. B., Wirk, L., Kulisch, M., Lehmann, T., Rauhaus, A., Nguyen, T. T., Le, Q. K. & T. N. Vu (2014): New amphibian and reptile records from Ha Giang Province, northern Vietnam. – Herpetology Notes 7: 185-201.
193. Schneider, N., Phung; T. M., Le, M. D., Nguyen, T. Q. & T. Ziegler (2014): A new Cyrtodactylus (Squamata: Gekkonidae) from Khanh Hoa Province, southern Vietnam. – Zootaxa 3785(4): 518-532.
192. Phung, T. M., Van Schingen, M., Ziegler, T. & T. Q. Nguyen (2014): A third new Cyrtodactylus (Squamata: Gekkonidae) from Ba Den Mountain, Tay Ninh Province, southern Vietnam. - Zootaxa 3764 (3): 347–363.
191. Luu, V. Q., Calame, T., Bonkowski, M., Nguyen, T. Q. & T. Ziegler (2014): A new species of Cyrtodactylus (Squamata: Gekkonidae) from Khammouane Province, Laos. – Zootaxa 3760(1): 54-66.

2013

190. Hecht, V. L., Pham, C. T., Nguyen, T. T., Nguyen, T. Q., Bonkowski, M. & T. Ziegler (2013): First Report on the herpetofauna of Tay Yen Tu Nature Reserve, northeastern Vietnam. - Biodiversity Journal 4(4): 507-552.
189. Jestrzemski, D., Schütz, S, Nguyen, T. Q. & T. Ziegler (2013): A survey of amphibians and reptiles in Chu Mom Ray National Park, Vietnam, with implications for herpetofaunal conservation. – Asian Journal of Conservation Biology 2(2): 88-110.
188. Luu, V. Q., Le, C. X., Do, H. Q., Hoang, T. T., Nguyen, T. Q., Bonkowski, M. & T. Ziegler (2013): New records of amphibians from Thuong Tien Nature Reserve, Hoa Binh Province, Vietnam. – Herpetology Notes 7: 51-58.
187. Scheld, S., Perl, R. G. B., Rauhaus, A., Karbe, D., Van Der Straeten, K., Hauswaldt, J. S., Randrianiaina, R. D., Gawor, A., Vences, M. & T. Ziegler (2013): Larval morphology and development of the Malagasy frog Mantidactylus betsileanus. – Salamandra 49(4): 186-200.
186. Luu, V. Q., Nguyen, T. Q., Calame, T., Hoang, T. T., Southichack, S., Bonkowski, M. & T. Ziegler (2013): New country records of reptiles from Laos. – Biodiversity Data Journal 1: e1015 doi: 10.3897/BDJ.1.e1015
185. Nguyen, T. Q., Lehmann, T., Le, M. D., Duong, H. T., Bonkowski, M. & T. Ziegler (2013): A new species of Hemiphyllodactylus (Reptilia: Gekkonidae) from northern Vietnam. – Zootaxa 3736(1): 89-98.
184. Nguyen, T. Q., Nguyen, K. V., Van Devender, R. W., Bonkowski, M. & T. Ziegler (2013): A new species of Sphenomorphus Fitzinger, 1843 (Squamata: Sauria: Scincidae) from Vietnam. – Zootaxa 3734 (2): 56-62.
183. Phung, T. M., Nguyen, T. Q., Rauhaus, A. & T. Ziegler (2013): The first record of the Middle Back-stripe Bullfrog, Kaloula mediolineata (Anura: Microhylidae), from Phu Qui Island, Binh Thuan Province, southern Vietnam. – Herpetology Notes 6: 463-465.
182. Nemes, L., Babb, R., Van Devender, W., Ngyuen, K. V., Le, Q. K., Vu, T. N., Rauhaus, A., Ngyuen, T. Q. & T. Ziegler (2013): First contribution to the reptile fauna of Quang Ngai Province, central Vietnam. – Biodiversity Journal 4(2): 301-326.
181. Luu, V. Q., Nguyen, T, Q., Pham, C. T., Dang, K. N., Vu, T. N., Miskovic, S., Bonkowski, M. & T. Ziegler (2013): No end in sight? Further new records of amphibians and reptiles from Phong Nha – Ke Bang National Park, Quang Binh Province, Vietnam. – Biodiversity Journal 4(2): 285-300.
180. Ziegler, T., Phung, T. M., Le, M. D. & T. Q. Nguyen (2013): A new Cyrtodactylus (Squamata: Gekkonidae) from Phu Yen Province, southern Vietnam. – Zootaxa 3686(4): 432-446.
179. Nguyen, T. Q., Phung, T. M., Le, M. D, Ziegler, T. & W. Böhme (2013): First record of the genus Oreolalax (Anura: Megophryidae) from Vietnam with description of a new species. – Copeia 2: 213-222.
178. Strauß, S., Ziegler, T., Allmeling, C., Reimers, K., Frank-Klein, N., Seuntjens, R. & P. M. Vogt (2013): In vitro culture of skin cells from the Critically Endangered Chinese giant salamander, Andrias davidianus (Blanchard, 1871) (Amphibia, Caudata, Cryptobranchidae). - Amphibian and Reptile Conservation 5(4): 51–63.
177. Hauswaldt, J. S., Vences, M., Louis, E., Brennemann, R. & T. Ziegler (2013): Genetic screening of captive Philippine crocodiles (Crocodylus mindorensis) as prerequisite for starting a conservation breeding program in Europe. – Herpetological Conservation and Biology 8(1): 75-87.
176. Nguyen, T. Q., Wang, Y.-Y., Yang, J.-H., Lehmann, T., Le, M. D., Ziegler, T. & M. Bonkowski (2013): A new species of the Gekko japonicus group (Squamata: Sauria: Gekkonidae) from the border region between China and Vietnam. – Zootaxa 3652(5): 501-518.
175. Bernardes, M., Rödder, D., Nguyen, T. T., Pham, C. T., Nguyen T. Q. & T. Ziegler (2013): Habitat chracterization and potential distribution of Tylototriton vietnamensis in northern Vietnam. – J. Nat. Hist. http://dx.doi.or/10.1080/00222933.2012.743611
174. Koch, A., Ziegler, T., Böhme, W., Arida, E. & M. Auliya (2013): Pressing problems: Distribution, threats, and conservation status oft he monitor lizards (Varanidae: Varanus spp.) of Southeast Asia and the Indo-Australian Archipelago. – Herpetological Conservation & Biology Vol. 8, Monograph 3: 1-63.

2012

173. Rauhaus, A., Gawor, A., Perl, R. G. B., van der Straeten, K., Karbe, D., Pham, C. T., Nguyen, T. Q. & T. Ziegler (2012): Larval development, stages and an international comparison of husbandry parameters of the Vietnamese Mossy Frog Theloderma corticale (Boulenger, 1903) (Anura: Rhacophoridae). – Asian Journal of Conservation Biology 1(2): 51-66.
172. Nguyen, T. Q., Le, M. D., Pham, C. T., Nguyen, T. T., Bonkowski, M. & T. Ziegler (2012) A new species of Gracixalus (Amphibia: Anura: Rhacophoridae) from northern Vietnam. – Organisms Diversity & Evolution DOI 10.1007/s13127-012-0116-0.
171. Vogel, G., Nguyen, T. Q., Kingsada, P. & T. Ziegler (2012): A new species of the genus Lycodon Boie, 1826 from Laos (Squamata: Colubridae). – North-Western Journal of Zoology 8(2): 344-352.
170. David, P., Nguyen, T. Q., Nguyen, T. T., Jiang, K., Chen, T., Teynié, A. & T. Ziegler (2012): A new species of the genus Oligodon Fitzinger, 1826 (Squamata: Colubridae) from northern Vietnam, southern China and central Laos. - Zootaxa 3498: 45–62.
169. Gawor, A., Rauhaus, A., Karbe, D., Van Der Straeten, K., Lötters, S. & T. Ziegler (2012): Is there a chance for conservation breeding? Ex situ management, reproduction, and early life stages of the Harlequin toad Atelopus flavescens Duméril & Bibron, 1841 (Amphibia: Anura: Bufonidae). – Amphibian and Reptile Conservation 5(3): 29-44.
168. Gawor, A., Chapuis, S., Pham, C. T., Nguyen, T. Q., Schmitz, A. & T. Ziegler (2012): Larval morphology oft wo species of the genus Theloderma (Tschudi, 1838) from Vietnam (Anura: Rhacophoridae: Rhacophorinae). – Zootaxa 3395: 59-64.
167. Nguyen, T. Q., Tran, T. T., Nguyen, T. T., Böhme, W. & T. Ziegler (2012): First record of Sphenomorphus incognitus (Thompson, 1912) (Squamata: Scincidae) from Vietnam with some notes on natural history. – Asian Herpetological Research 3(2): 147-150.
166. Gehring, P.-S., Tolley, K. A., Eckhardt, F. S., Townsend, T. M., Ziegler, T., Ratsoavina, F., Glaw, F. & M. Vences (2012): Hiding deep in the trees: discovery of divergent mitochondrial lineages in Malagasy chameleons of the Calumma nasutum group. – Ecology and Evolution, 1-12, doi; 10.1002/ece3.269.
165. Loos, J., Von Wehrden, H., Dang, K. N. & T. Ziegler (2012): Niche segregation in microhabitat use in of three sympatric Cyrtodactylus in the Phong Nha – Ke Bang National Park, central Vietnam. – Herpetological Conservation and Biology 7(1): 101-108.
164. Nazarov, R., Poyarkov, N. A., Orlov, N. I., Phung, T. M., Nguyen, T. T., Hoang, D. M. & T. Ziegler (2012): Two new cryptic species of the Cyrtodactylus irregularis complex (Squamata: Gekkonidae) from southern Vietnam. – Zootaxa 3302: 1-24.
163. Wildenhues, M., Rauhaus, A., Bach, R., Karbe, D., van der Straeten, K., Hertwig, S. T. & T. Ziegler (2012): Husbandry, captive breeding, larval development and stages of the Malayan horned frog Megophrys nasuta (Schlegel, 1858) (Amphibia: Anura: Megophryidae). – Amphibian and Reptile Conservation 6(1): 15-28.

2011

162. Ohler, A., Wollenberg, K. C., Grosjean, S., Hendrix, R., Vences, M., Ziegler, T. & A. Dubois (2011): Sorting out Lalos: description of new species and additional taxonomic data on megophryid frogs from northern Indochina (genus Leptolalax, Megophryidae, Anura). – Zootaxa 3147: 1-83.
161. Luu, V. Q., Nguyen, T. Q., Do, H. Q. & T. Ziegler (2011): A new Cyrtodactylus from Huong Son limestone forest, Hanoi, northern Vietnam. – Zootaxa 3129: 39-50.
160. Phung, T. M. & T. Ziegler (2011): Another new Gekko species (Squamata: Gekkonidae) from southern Vietnam. – Zootaxa 3129: 51-61.
159. Wildenhues, M. J., Bagaturov, M., Schmitz, A., Tran, D. A. T., Hendrix, R. & T. Ziegler (2011): Captive management and reproductive biology of Orlov’s tree frog, Rhacophorus orlovi Ziegler & Köhler, 2001 (Amphibia: Anura: Rhacophoridae), including larval description, colour pattern variation and advertisement call. – Der Zoologische Garten N.F. 80: 287-303.
158. Nguyen, T. Q., Stenke, R., Nguyen, H.X. & T. Ziegler (2011): The terrestrial reptile fauna of the biosphere reserve Cat Ba Archipelago, Hai Phong, Vietnam. In: Schuchmann, K.-L. (Hrsg.): Tropical vertebrates in a changing world. – Bonner Zoologische Monographien 57: 99-115.
157. Ziegler, T., Dang, T. T. & T. Q. Nguyen (2011): Breeding, natural history and diversity research: Ex situ and in situ Asian amphibian projects of the Cologne Zoo and the Institute of Ecology and Biological Resources. In: Das, I., Haas, A. & A. A. Tuen (Hrsg.): Biology and conservation of tropical Asian amphibians. Proceedings of the Conference “Biology of the amphibians in the Sunda region, South-east Asia”, Sarawak, Malaysia, 28-30 Sept. 2009. – Institute of Biodiversity and Environmental Conservation, Universiti Malaysia Sarawak, Kota Samarahan: 137-146.
156. Geissler, P., Nguyen, T. Q., Phung, T. M., Van Devender, R. W., Hartmann, T., Farkas, B., Ziegler, T. & W. Böhme (2011): A review of Indochinese skinks of the genus Lygosoma Hardwicke & Gray, 1827 (Squamata: Scincidae), with natural history notes and an identification key. – Biologia 66(6): 1159-1176.
155. Tran, D.T.A., Nguyen, T.T., Phung, T.M., Ly, T., Böhme, W. & T. Ziegler (2011): Redescription of Rhacophorus chuyangsinensis Orlov, Nguyen & Ho, 2008 (Anura: Rhacophoridae) based on new collections from new south Vietnamese provincial records: Lam Dong and Khanh Hoa. – Revue Suisse de Zoologie 118(3): 413-421.
154. Rösler, H., Bauer, A. M., Heinicke, M. P., Greenbaum, E., Jackman, T., Nguyen, T. Q. & T. Ziegler (2011): Phylogeny, taxonomy, and zoogeography of the genus Gekko Laurenti, 1768 with the revalidation of G. reevesii Gray, 1831 (Sauria: Gekkonidae). – Zootaxa 2989: 1-50.
153. Schneider, N., Nguyen, T. Q., Schmitz, A., Kingsada, P., Auer, M. & T. Ziegler (2011): A new species of karst dwelling Cyrtodactylus (Squamata: Gekkonidae) from northwestern Laos. – Zootaxa 2930: 1-21.
152. Nguyen, T. Q., Schmitz, A., Nguyen, T. T., Orlov, N. L., Böhme, W. & T. Ziegler (2011): Review of the genus Sphenomorphus Fitzinger, 1843 (Squamata: Sauria: Scincidae) in Vietnam, with description of a new species from northern Vietnam and southern China and the first record of Sphenomorphus mimicus Taylor, 1962 from Vietnam – J. Herpetol. 45(2): 145-154.
151. Nguyen, T. Q., Böhme, W., Nguyen, T. T., Le, Q. K., Pahl, K. R., Haus, T. & T. Ziegler (2011): Review of the genus Dopasia Gray, 1853 (Squamata: Anguidae) in the Indochina subregion. – Zootaxa 2894: 58-68.
150. David, P., Nguyen, T. Q., Schneider, N. & T. Ziegler (2011): A new species of the genus Cyrtodactylus Gray, 1827 from central Laos (Squamata: Gekkonidae). – Zootaxa 2833: 29-40.
149. Ziegler, T. (2011): Breeding, research and conservation of tropical herpetodiversity: Linking ex situ with in situ approaches. In: Dick, G. (Hrsg.): Biodiversity is Life. - Proceedings of the 65th Annual Conference, World Association of Zoos and Aquariums, WAZA Executive Office, Gland: 73-77.
148. Gawor, A., van der Straeten, K., Karbe, D., Manthey, U. & T. Ziegler (2011): Reproduction and development of the dark-sided frog Hylarana nigrovittata sensu lato at the Cologne Zoo. – Salamandra 47(1): 1-8.
147. David, P., Pham, C. T., Nguyen, T. Q. & T. Ziegler (2011): A new species of the genus Opisthotropis Günther, 1872 (Squamata: Natricidae) from the highlands of Kon Tum Province, Vietnam. – Zootaxa 2758: 43-56.

2010

146. Hövel, A., Ommer, S. & T. Ziegler (2010): Keeping and breeding of the coral catshark (Atelomycterus marmoratus) at the Aquarium of the Cologne Zoo. – Zool. Garten N.F. 79: 243-253.
145. Wildenhues, M. J., Gawor, A., Nguyen, T. Q., Nguyen, T. T., Schmitz, A. & T. Ziegler (2010): First description of larval and juvenile stages of Rhacophorus maximus Günther, 1859 “1858” (Anura: Rhacophoridae) from Vietnam. - Revue suisse de Zoologie 117(4): 679-696.
144. Ziegler, T. & T. Q. Nguyen (2010): New discoveries of amphibians and reptiles from Vietnam. – Bonn zoological Bulletin 57(2): 137-147.
143. Koch, A., Auliya, M. & T. Ziegler (2010): Updated checklist of the living monitor lizards of the world (Squamata: Varanidae). – Bonn zoological Bulletin 57(2): 127-136.
142. Nguyen, T. Q., Kingsada, P., Rösler, H., Auer, M. & T. Ziegler (2010): A new species of Cyrtodactylus (Squamata: Gekkonidae) from northern Laos. – Zootaxa 2652: 1-16.
141. Ziegler, T., Orlov, N., Giang, T. T., Nguyen, T. Q., Nguyen, T. T., Le, Q. K., Nguyen, K. V. & T. N. Vu (2010): New records of cat snakes, Boiga Fitzinger, 1826 (Squamata, Serpentes, Colubridae), from Vietnam, inclusive of an extended diagnosis of Boiga bourreti Tillack, Le & Ziegler, 2004. – Zoosyst. Evol. 86(2): 263-274.
140. Ziegler, T. (2010): Forschung als wichtige Aufgabe der Zoos zur Erhaltung der Biodiversität. – Verhandlungsbericht des IV. Rigi-Symposiums, Goldau-Rigi, 28.-30.1.2010: 75-80.
139. Ziegler, T., Rütz, N., Oberreuter, J. & S. Holst (2010): First F2 Breeding of the Quince monitor lizard Varanus melinus Böhme & Ziegler, 1997 at the Cologne Zoo Aquarium. – Biawak 4(3): 82-92.
138. Nguyen, T. Q., Nguyen, S. V., Böhme, W. & T. Ziegler (2010): A new species of Scincella (Squamata: Scincidae) from Vietnam. – Folia Zool. 59(2): 115-121.
137. Nguyen, T. Q., Nguyen, T. T., Schmitz, A., Orlov, N. L. & T. Ziegler (2010): A new species of the genus Tropidophorus Duméril & Bibron, 1839 (Squamata: Sauria: Scincidae) from Vietnam. – Zootaxa 2439: 53-68.
136. Tran, D. T. A., Le, Q. K., Le, K. V., Vu, T. N., Nguyen, T. Q., Böhme, W. & T. Ziegler (2010): First and preliminary frog records (Amphibia: Anura) from Quang Ngai Province, Vietnam. – Herpetology Notes 3: 111-119.
135. Nguyen, T. Q., David, P., Tran, T. T., Luu, V. Q., Le, Q. K. & T. Ziegler (2010): Amphiesmoids ornaticeps (Werner, 1924), an addition to the snake fauna of Vietnam, with a redescription and comments on the genus Amphiesmoides Malnate, 1961 (Squamata: Natricidae). - Rev. Suisse de Zoologie 117(1): 45-56.
134. Ziegler, T., Nazarov, R., Orlov, N., Nguyen, T. Q., Vu, T. N., Dang, K. N., Dinh, T. H. & A. Schmitz (2010): A third new Cyrtodactylus (Squamata: Gekkonidae) from Phong Nha – Ke Bang National Park, Vietnam. – Zootaxa 2413: 20-36.
133. Nguyen, T. Q., Ngyuen, T. T., Böhme, W. & T. Ziegler (2010): First record of the mountain ground skink Scincella montiola (Schmidt, 1925) (Squamata: Scincidae) from Vietnam. – Russ. J. Herpetol. 17(1): 67-69.
132. Nguyen, T. Q., Nguyen, S. V., Orlov, N., Hoang, T. N., Böhme, W. & T. Ziegler (2010): A review of the genus Tropidophorus (Squamata, Scincidae) from Vietnam with new species records and additional data on natural history. - Zoosyst. Evol. 86(1): 5-19.

2009

131. Nguyen, T. Q., Koch, A. & T. Ziegler (2009): A new species of reed snake, Calamaria Boie, 1827 (Squamata: Colubridae), from central Vietnam. – Hamdryad 34(1): 1-8.
130. Vogel, G., David, P., Pauwels, O.S.G., Sumontha, M., Norval, G., Hendrix, R., Vu, T. N. & T. Ziegler (2009): A revision of Lycodon ruhstrati (Fischer 1886) auctorum (Squamata Colubridae), with the description of a new species from Thailand and a new subspecies from the Asian mainland. – Tropical Zoology 22(2): 131-182.
129. Rösler, H., Nguyen, T. Q., Doan, V. K., Ho, T. C., Nguyen, T. T. & T. Ziegler (2009): A new species of the genus Gekko Laurenti (Squamata: Sauria: Gekkonidae) from Vietnam with remarks on G. japonicus (Schlegel). – Zootaxa 2329: 56-68.
128. Ziegler, T., Strauch, M., Pes, T., Konas, J., Jirasek, T., Rütz, N. Oberreuter, J. & S. Holst (2010): First captive breeding of the Blue-spotted tree monitor Varanus macraei Böhme & Jacobs, 2001 at the Plzen and Cologne Zoos. – BIAWAK 3(4): 122-133.
127. Hummel, J., Bickel, D., Ziegler, T. & A. Fidgett (2009): Herbaceous forages as components in diets of herbivorous reptiles. In: Clauss, M., Fidgett, A. L., Hatt, J. M., Huisman, T., Hummel, J., Janssen, G., Nijboer, J. & Plowman, A. (eds): Zoo Animal Nutrition Vol. IV. - Filander Verlag, Fürth: 105-115.
126. Hendrix, R., Böhme, W. & T. Ziegler (2009): The tadpole of the helmeted toad, Ingerophrynus galeatus (Günther, 1864), from Vietnam (Anura: Bufonidae). – Herpetology Notes 2: 155-160.
125. Geissler, P., Nazarov, R., Orlov, N. L., Böhme, W., Phung, T. M., Nguyen, T. Q. & T. Ziegler (2009): A new species of the Cyrtodactylus irregularis complex (Squamata: Gekkonidae) from southern Vietnam. – Zootaxa 2161: 20-32.
124. Koch, A., Arida, E., Schmitz, A., Böhme, W. & T. Ziegler (2009): Refining the polytypic species concept of mangrove monitors (Squamata: Varanus indicus group): a new cryptic species from the Talaud islands, Indonesia, reveals the underestimated diversity of Indo-Australian monitor lizards. – Australian Journal of Zoology 57: 29-40.
123. Vu, T. N. & T. Ziegler (2009): Geographic Distribution: Rhadinophis prasinus (Green bush ratsnake). - Herpetological Review. 40(1): 116.
122. Le, Q. K. & T. Ziegler (2009): Geographic Distribution: Protobothrops cornutus (Smith’s horned pit viper). - Herpetological Review. 40(1): 115.
121. Ziegler, T. & Q. X. Hoang (2009): Geographic Distribution: Liopeltis frenatus (Günther’s stripe-necked snake). - Herpetological Review. 40(1): 115.
120. Gawor, A., Hendrix, R., Vences, M., Böhme, W. & T. Ziegler (2009): Larval morphology in four species of Hylarana from Vietnam and Thailand with comments on the taxonomy of H. nigrovittata sensu latu (Anura: Ranidae). – Zootaxa 2051: 1-25.
119. Nguyen, T. Q., Dang, T. T., Pham, C. T., Nguyen, T. T. & T. Ziegler (2009): Amphibian breeding station in Hanoi: a trial model for linking conservation and research with sustainable use. – Froglog 91, March 2009: 12-15.
118. Ngo, T. V. & T. Ziegler (2009): A new species of Dixonius from Nui Chua National Park, Ninh Thuan Province, southern Vietnam (Squamata, Gekkonidae). – Zoosyst. Evol. 85(1): 117-125.
117. Haus, T., Vogt, M., Forster, B., Vu, T. N. & T. Ziegler (2009): Distribution and population densities of diurnal primates in the karst forests of Phong Nha – Ke Bang National Park, Quang Binh Province, Central Vietnam. – Int. J. Primatol. Doi 10.1007/s10764-009-9343-4

2008

116. Ziegler, T., Nguyen, S. V. & T. Q. Nguyen (2008): A new reed snake of the genus Calamaria Boie (Squamata: Colubridae) from Vietnam. – Current Herpetology 27(2): 71-80.
115. Böhme, W. & T. Ziegler (2008): A review of iguanian and anguimorph lizard genitalia (Squamata: Chamaeleonidae; Varanoidea, Shinisauridae, Xenosauridae, Anguidae) and their phylogenetic significance: comparisons with molecular data sets. – J. Zool. Syst. Evol. Res. 47(2): 189-202.
114. Nguyen, T. Q., Hendrix, R., Böhme, W., Vu, T. N. & T. Ziegler (2008): A new species of the genus Philautus (Amphibia: Anura: Rhacophoridae) from the Truong Son Range, Quang Binh Province, central Vietnam. – Zootaxa 1925: 1-13.
113. Rösler, H., Vu, T. N., Nguyen, T. Q., Ngo, T. V. & T. Ziegler (2008): A new Cyrtodactylus (Squamata: Gekkonidae) from central Vietnam. – Hamadryad 33(1): 48-63.
112. Dawson, K., Malhotra, A., Thorpe, R. S., Peng Guo, Mrinalini & T. Ziegler (2008): Mitochondrial DNA analysis reveals a new member of the Asian pitviper genus Viridovipera (Serpentes: Viperidae: Crotalinae). – Molecular Phylogenetics and Evolution 49: 356-361.
111. Ziegler, T., David, P. & T. N. Vu (2008): A new natricine snake of the genus Opisthotropis from Tam Dao, Vinh Phuc Province, northern Vietnam (Squamata, Colubridae). – Zoosyst. Evol. 84(2): 197-203.
110. Hendrix, R, Nguyen, T. Q., Böhme, W. & T. Ziegler (2008): New anuran records from Phong Nha – Ke Bang National Park, Truong Son, central Vietnam. – Herpetology Notes 1: 23-31.
109. Nguyen, T. Q., Tran, T. T., Hoang, N. V., Böhme, W. & T. Ziegler (2008): Rediscovery and redescription of Ateuchosaurus chinensis Gray, 1845 (Squamata: Sauria: Scincidae) from northeastern Vietnam. – Herpetology Notes 1: 17-21.
108. Ziegler, T., Nguyen, T. Q., Schmitz, A., Stenke, R. & H. Rösler (2008): A new species of Goniurosaurus from Cat Ba Island, Hai Phong, northern Vietnam (Squamata: Eublepharidae). – Zootaxa 1771: 16-30.
107. Ziegler, T., Hartmann, T., Van der Straeten, K., Karbe, D. & W. Böhme (2008): Captive breeding and larval morphology of Tylototriton shanjing Nussbaum, Brodie & Yang, 1995, with an updated key of the genus Tylototriton (Amphibia: Salamandridae). – Der Zoologische Garten N.F. 77: 246-260.
106. Ziegler, T., David, P., Miralles, A., Doan, K. V. & T. Q. Nguyen (2008): A new species of the snake genus Fimbrios from Phong Nha – Ke Bang National Park, Truong Son, central Vietnam (Squamata: Xenodermatidae). – Zootaxa 1729: 37-48.
105. Ziegler, T., Le, Q. K., Vu, T. N., Hendrix, R. & W. Böhme (2008): A comparative study of crocodile lizards (Shinisaurus crocodilurus Ahl, 1930) from Vietnam and China. - Raffl. Bull. Zool. 56(1): 181-187.
104. Hendrix, R., Gawor, A., Vences, M. & T. Ziegler (2008): The tadpole of the narrow-mouthed frog Microhyla fissipes from Vietnam (Anura: Microhylidae). – Zootaxa 1675: 67-68.

2007

103. Philipp, K. M., Ziegler, T. & W. Böhme (2007): Preliminary investigations of the natural diet of six monitor lizard species of the Varanus (Euprepiosaurus) indicus group. In: Horn, H.-G., Böhme, W. & U. Krebs (eds.): Advances in monitor research III: 336-345. - Mertensiella, Rheinbach 16: 1-447.
102. Böhme, W. & T. Ziegler (2007): Notes on the distribution, diet, hemipenis morphology and systematics of Varanus spinulosus Mertens, 1941. In: Horn, H.-G., Böhme, W. & U. Krebs (eds.): Advances in monitor research III: 100-108. - Mertensiella, Rheinbach 16: 1-447.
101. Bickel, D., Ziegler, T., Nogge, G. & J. Hummel (2007): Influence of particle size on in vitro fermentation in different plant species. - Proceedings 6th International Zoo and Wildlife Research Conference on Behaviour, Physiology and Genetics, Berlin 2007, Leibniz Institute for Zoo and Wildlife Research (IZW): 35.
100. Ziegler, T. & S. Olbort (2007): Genital structures and sex identification in crocodiles. – Crocodile Specialist Group Newsletter 26(3): 16-17. [for extended version see www.wmi.com.au/csgarticles]
99. Ziegler, T., Heidrich, A., Schmitz, A. & W. Böhme (2007): Phylogenetic position, morphology and natural history of the Vietnamese water skink Tropidophorus noggei Ziegler, Vu & Bui, 2005 (Sauria: Scincidae). - Revue Suisse de Zoologie 114(3): 599-614.
98. Ziegler, T. (2007): Field surveys and collection management as basis for herpetodiversity research and nature conservation in Vietnam. In: Ho Chi Minh City People’s Committee, Viet Nam Union of Science and Technology Associations, Colivam, PTC (eds.): Development of Hochiminh City Museum of Natural History: 230-248. – Proceedings International Conference, Ho Chi Minh City, Sept. 12-15: 389 pp.
97. Ziegler, T., Schmitz, A., Heidrich, A., Vu, T. N. & T. Q. Nguyen (2007): A new species of Lygosoma (Squamata: Sauria: Scincidae) from the Central Truong Son, Vietnam, with notes on its molecular phylogenetic position. – Revue Suisse de Zoologie 114(2): 397-415.
96. Ziegler, T., Hendrix, R., Vu, T. N., Vogt, M., Forster, B. & K. N. Dang (2007):The diversity of a snake community in a karst forest ecosystem in the central Truong Son, Vietnam, with an identification key. – Zootaxa 1493: 1-40.
95. Ziegler, T., Schmitz, A., Koch, A. & W. Böhme (2007): A review of the subgenus Euprepiosaurus of Varanus (Squamata: Varanidae): morphological and molecular phylogeny, distribution and zoogeography, with an identification key for the members of the V. indicus and the V. prasinus species groups. – Zootaxa 1472: 1-28.
94. David, P., Bain, R. H., Nguyen, T. Q., Orlov, N. L., Vogel, G., Vu, T. N. & T. Ziegler (2007): A new species of the natricine snake genus Amphiesma from the Indochinese Region (Squamata: Colubridae: Natricinae). – Zootaxa 1462: 41-60.
93. Ziegler, T., Böhme, W. & A. Schmitz (2007): A new species of the Varanus indicus group (Squamata, Varanidae) from Halmahera Island, Moluccas: morphological and molecular evidence. - Mitt. Mus. Nat.kd. Berlin, Zool. Reihe 83 Supplement: 109-119.
92. Heidrich, A., Rösler, H., Vu, T. N., Böhme, W. & T. Ziegler (2007): Another new Cyrtodactylus (Squamata: Gekkonidae) from Phong Nha – Ke Bang National Park, central Truong Son, Vietnam. – Zootaxa 1445: 35-48.
91. Hendrix, R., Grosjean, S., Le, Q. K., Vences, M., Vu, T. N. & T. Ziegler (2007): Molecular identification and description of the tadpole of the Annam Flying Frog, Rhacophorus annamensis Smith, 1924 (Anura: Rhacophoridae). – Salamandra 43(1): 11-19.

2006

90. Vu, T. N., Nguyen, T. Q., Grismer, L. L. & T. Ziegler (2006): First record of the Chinese leopard gecko, Goniurosaurus luii (Reptilia : Eublepharidae) from Vietnam. – Current Herpetology 25(2): 93-95.
89. Ziegler, T., Ohler, A., Vu, T. N., Le, Q. K., Nguyen, T. X., Dinh, T. H. & T. N. Bui (2006): Review of the amphibian and reptile diversity of Phong Nha – Ke Bang National Park and adjacent areas, central Truong Son, Vietnam. In: Vences, M., Köhler, J., Ziegler, T. & W. Böhme (Eds.): Herpetologia Bonnensis II: 247-262. – Proceedings of the 13th Ordinary General Meeting of the Societas Europaea Herpetologica, Bonn: 262 pp.
88. Ziegler, T., Vu, T. N., Le, Q. K., Nguyen, T. Q., Hallermann, J., Le, K. V. & H. M. Thach (2006): Neue Verbreitungsnachweise einiger wenig bekannter vietnamesischer Amphibien und Reptilien. – Sauria, Berlin 28(2): 29-40.
87. Ziegler, T. & Q. K. Le (2006): A new natricine snake of the genus
Amphiesma (Squamata: Colubridae: Natricinae) from the central Truong Son,
Vietnam. - Zootaxa 1225: 39-56.
86. Petersen, D., Laterveer, M., Van Bergen, D., Masayuki, H., Hebbinghaus, R., Janse, M., Jones, R., Richter, U., Ziegler, T., Visser, G. & H. Schuhmacher (2006): The application of sexual coral recruits for the sustainable management of ex situ populations in public aquariums to promote coral reef conservation – SECORE project. – Aquatic Conservation: Marine and Freshwater Ecosystems 16: 167-179.

2005

85. Ziegler, T. & Q. K. Le (2005): A new species of reed snake, Calamaria (Squamata: Colubridae), from the Central Truong Son (Annamite mountain range), Vietnam. – Zootaxa 1042: 27-38.
84. Ziegler, T., Vu, T. N. & T. N. Bui (2005): A new water skink of the genus Tropidophorus from the Phong Nha – Ke Bang National Park, central Vietnam (Squamata: Sauria: Scincidae). – Salamandra 41(3): 137-146.
83. Rösler, H., Ziegler, T., Vu, T. N., Herrmann, H.-W. & W. Böhme (2004): A new lizard of the genus Gekko Laurenti, 1768 (Squamata: Sauria: Gekkonidae) from the Phong Nha - Ke Bang National Park, Quang Binh Province, Vietnam. - Bonner Zoologische Beiträge 53(1/2): 135-148.
82. Ziegler, T., Gaulke, M. & W. Böhme (2005): Genital morphology and systematics of Varanus mabitang Gaulke & Curio, 2001 (Squamata, Varanidae). – Current Herpetology 24(1): 13-17.
81. Böhme, W. & T. Ziegler (2005): A new monitor lizard from Halmahera, Moluccas, Indonesia (Reptilia: Squamata: Varanidae). – Salamandra 41(1/2): 51-59.
80. Ziegler, T. & Q. X. Hoang (2005): Geographic Distribution: Sinonatrix aequifasciata (Equal-banded Watersnake). - Herpetological Review. 36(1): 84.
79. Ziegler, T. & P. B. Vo (2005): Geographic Distribution: Cylindrophis ruffus (Red-tailed Pipe Snake). - Herpetological Review. 36(1): 81.

2004

78. Ziegler, T., Rösler, H. & Q. X. Hoang (2004): Geographic Distribution. Cyrtodactylus irregularis (Irregular Bent-Toed Gecko). – Herpetological Review, Clovis 35(3): 285-286.
77. Le Khac Quyet & T. Ziegler (2004): Geographic Distribution. Euprepiophis mandarinus (Mandarin Ratsnake). – Herpetological Review, Clovis 35(3): 291-292.
76. Tillack, F., Ziegler, T. & Le Khac Quyet (2004): Eine neue Art der Gattung Boiga Fitzinger, 1826 (Serpentes: Colubridae: Colubrinae) aus dem zentralen Vietnam. – Sauria, Berlin 26(4): 3-12.
75. Ziegler, T. & W. Böhme (2004): On the genital morphology of blue-tongued skinks (Scincidae: Lygosominae: Tiliqua). In: Hitz, R., Shea, G. M., Hauschild, A., Henle, K. & H. Werning (eds.): Blue-tongued skinks. Contributions to the knowledge of Tiliqua and Cyclodomorphus. – Mathias Schmidt Publications, Münster: 45-52.
74. Hitz, R. & T. Ziegler (2004): Sex identification in blue-tongued skinks (Sauria: Scincidae: Tiliqua). In: Hitz, R., Shea, G. M., Hauschild, A., Henle, K. & H. Werning (eds.): Blue-tongued skinks. Contributions to the knowledge of Tiliqua and Cyclodomorphus. – Mathias Schmidt Publications, Münster: 35-44.
73. Philipp, K. M., Ziegler, T. & W. Böhme (2004): Varanus yuwonoi. In: Pianka, E. R., King, D. R. & R. A. King (eds.): Varanoid lizards of the world. - Indiana University Press, Bloomington: 279-281.
72. Philipp, K. M., Ziegler, T. & W. Böhme (2004): Varanus spinulosus. In: Pianka, E. R., King, D. R. & R. A. King (eds.): Varanoid lizards of the world. - Indiana University Press, Bloomington: 272-274.
71. Ziegler, T. & W. Böhme (2004): Varanus melinus. In: Pianka, E. R., King, D. R. & R. A. King (eds.): Varanoid lizards of the world. - Indiana University Press, Bloomington: 215-219.
70. Böhme, W., Philipp, K. M. & T. Ziegler (2004): Varanus juxtindius. In: Pianka, E. R., King, D. R. & R. A. King (eds.): Varanoid lizards of the world. - Indiana University Press, Bloomington: 193-196.
69. Philipp, K. M., Ziegler, T. & W. Böhme (2004): Varanus jobiensis. In: Pianka, E. R., King, D. R. & R. A. King (eds.): Varanoid lizards of the world. - Indiana University Press, Bloomington: 189-192.
68. Dryden, G. & T. Ziegler (2004): Varanus indicus. In: Pianka, E. R., King, D. R. & R. A. King (eds.): Varanoid lizards of the world. - Indiana University Press, Bloomington: 184-188.
67. Philipp, K. M., Ziegler, T. & W. Böhme (2004): Varanus finschi. In: Pianka, E. R., King, D. R. & R. A. King (eds.): Varanoid lizards of the world. - Indiana University Press, Bloomington: 176-178.
66. Böhme, W., Philipp, K. M. & T. Ziegler (2004): Varanus doreanus. In: Pianka, E. R., King, D. R. & R. A. King (eds.): Varanoid lizards of the world. - Indiana University Press, Bloomington: 168-171.
65. Philipp, K. M., Ziegler, T. & W. Böhme (2004): Varanus cerambonensis. In: Pianka, E. R., King, D. R. & R. A. King (eds.): Varanoid lizards of the world. - Indiana University Press, Bloomington: 165-167.
64. Ziegler, T., Böhme, W. & K. M. Philipp (2004): Varanus caerulivirens. In: Pianka, E. R., King, D. R. & R. A. King (eds.): Varanoid lizards of the world. - Indiana University Press, Bloomington: 161-164.
63. Böhme, W. & T. Ziegler (2004): Varanus ornatus. In: Pianka, E. R., King, D. R. & R. A. King (eds.): Varanoid lizards of the world. - Indiana University Press, Bloomington: 139-142.
62. Lunde, D. P., Musser, G. G. & T. Ziegler (2004): Description of a new species of Crocidura (Soricomorpha: Soricidae, Crocidurinae) from Ke Go Nature reserve, Vietnam. – Mammal Study 29: 27-36.
61. Herrmann, H.-W., Ziegler, T., Malhotra, A., Thorpe, R. S. & C. Parkinson (2004): Redescription and systematics of Trimeresurus cornutus (Serpentes: Viperidae) based on morphology and molecular data. – Herpetologica 60(2): 211-221.
60. Ziegler, T., Herrmann, H.-W., Vu Ngoc Thanh, Le Khac Quyet, Nguyen Tan Hiep, Cao Xuan Chinh, Luu Minh Thanh & Dinh Huy Tri (2004): The amphibians and reptiles of the Phong Nha - Ke Bang National Park, Quang Binh Province, Vietnam. - Hamadryad, Tamil Nadu 28(1-2): 19-42.

2003

59. Schmitz, A. & T. Ziegler (2003): Geographic distribution. Sphenomorphus rufocaudatus (Red-tailed Groundskink). - Herpetological Review, Clovis 34(4): 385.
58. Le, Q. K. & T. Ziegler (2003): First record of the Chinese crocodile lizard from outside of China: Report on a population of Shinisaurus crocodilurus Ahl, 1930 from North-eastern Vietnam. - Hamadryad, Tamil Nadu 27(2): 193-199.
57. Ziegler, T. (2003): Diet and natural history notes of Leptodactylus laticeps (Anura: Leptodactylidae) in the Gran Chaco of Paraguay. - Salamandra, Rheinbach 39(1): 39-48.
56. Mebs, D., Kuch, U., Herrmann, H.-W. & T. Ziegler (2003): Biochemical and biological activities of the venom of a new species of pitviper from Vietnam, Triceratolepidophis sieversorum. - Toxicon, Elsevier 41: 139-143.

2002

55. Ziegler, T., Rösler, H., Herrmann, H.-W. & Vu Ngoc Thanh (2002): Cyrtodactylus phongnhakebangensis sp. n., ein neuer Bogenfingergecko aus dem annamitischen Karstwaldmassiv, Vietnam. - Herpetofauna, Weinstadt 24(141): 11-25.
54. Herrmann, H.-W., Ziegler, T., Stuart, B. L. & N. L. Orlov (2002): New findings on the distribution, morphology and natural history of Triceratolepidophis sieversorum (Serpentes: Viperidae). - Herpetological Natural History, La Sierra 9(1): 89-94.
53. Farkas, B. & T. Ziegler (2002): A note on the distribution of Amyda cartilaginea (Boddaert, 1770) in Vietnam. - Hamadryad, Tamil Nadu 27(1):149-154.
52. Ziegler, T. & J. B. Rasmussen (2002): Hemipenial variation in the African snake genus Crotaphopeltis Fitzinger, 1843 (Serpentes, Colubridae, Boiginae). - Bulletin of the Natural History Museum, London (Zool.) 68(2): 51-55.
51. Ziegler, T., Unger, J., Feiler, A. & E. Lehr (2002). The first Gran Chaco expedition of the Museum für Tierkunde Dresden: Records of amphibians, reptiles and mammals from the Dry Chaco of Paraguay (Amphibia, Reptilia, Mammalia). - Faunistische Abhandlungen, Staatliches Museum für Tierkunde, Dresden 23: 219-238.
50. Fritz, U., Ziegler, T., Herrmann, H.-W. & E. Lehr (2002): Intergradation between subspecies of Cuora galbinifrons Bourret, 1939 and Pyxidea mouhotii (Gray, 1862) in southern North Vietnam (Reptilia: Testudines: Geoemydidae). - Faunistische Abhandlungen, Staatliches Museum für Tierkunde, Dresden 23: 59-74.
49. Ziegler, T. & H.-W. Herrmann (2002): Wiederentdeckung zweier gehörnter Grubenotterarten in Vietnam. - Mitteilungen Zoologische Gesellschaft für Arten- und Populationsschutz e.V. 18(2): 24-26.
48. Ziegler, T. & W. R. Lourenço (2002): New scorpion records from the Gran Chaco of Paraguay (Chelicerata, Scorpiones). - Entomol. Mitt. Mus. Hamburg 14(166): 63-69.
47. Ziegler, T., Herrmann, H.-W. & J. Köhler (2002): Geographic distribution. Rhacophorus orlovi (Orlov's Tree Frog). - Herpetological Review, Clovis 33(2):146.
46. Ziegler, T., Unger, J., Feiler, A. & R. Kraft (2002): On the occurrence of the capybara, Hydrochoerus hydrochaeris (Linnaeus, 1766), in the Dry Chaco of Paraguay (Mammalia: Rodentia: Hydrochoeridae). - Faunistische Abhandlungen, Staatliches Museum für Tierkunde, Dresden 22(2): 423-429.
45. Zöphel, U., Ziegler, T., Feiler, A. & S. Pocha (2002): Erste Nachweise der Mückenfledermaus, Pipistrellus pygmaeus (Leach, 1825), für Sachsen (Mammalia: Chiroptera: Vespertilionidae). - Faunistische Abhandlungen, Staatliches Museum für Tierkunde, Dresden 22(2): 411-422.
44. Ziegler, T., Böhme, W. & J. Unger (2002): First record of Gymnophthalmus rubricauda Boulenger, 1902 for Paraguay, with notes on its morphology, ecology and habitat (Reptilia: Sauria: Gymnophthalmidae). - Faunistische Abhandlungen, Staatliches Museum für Tierkunde, Dresden 22(2): 347-351.
43. Ziegler, T. & M. Vences (2002): The tadpole of Rhacophorus verrucosus Boulenger, 1893 from Vietnam (Amphibia: Anura: Rhacophoridae). - Faunistische Abhandlungen, Staatliches Museum für Tierkunde, Dresden 22(2): 319-327.
42. Böhme, W., Philipp, K. & T. Ziegler (2002): Another new member of the Varanus (Euprepiosaurus) indicus group (Sauria, Varanidae): an undescribed species from Rennell Island, Solomon Islands. - Salamandra, Rheinbach 38(1): 15-26.
41. Feiler, A., Ziegler, T., Ansorge, H. & T. Nadler (2002): Pseudonovibos spiralis - Mythos oder Wirklichkeit? - Mitteilungen Zoologische Gesellschaft für Arten- und Populationsschutz e.V. 18(1): 21-24.

2001

40. Ziegler, T., Böhme, W., Eidenmüller, B. & K. M. Philipp (2001): A note on the coexistence of three species of Pacific monitor lizards in Australia (Sauria, Varanidae, Varanus indicus group). - Bonner Zoologische Beiträge, Bonn 50(1-2): 27-30.
39. Ziegler, T., Feiler, A. & U. Zöphel (2001): New data on the genital morphology of the midge bat Pipistrellus pygmaeus (Leach, 1825) from Germany (Mammalia: Chiroptera: Vespertilionidae). - Zoologische Abhandlungen, Staatliches Museum für Tierkunde, Dresden 51(2): 435-444.
38. Schmitz, A., Vences, M., Weitkus, S., Ziegler, T. & W. Böhme (2001): Recent maternal divergence of the parthenogenetic lizard Leiolepis guentherpetersi from L. guttata: molecular evidence (Reptilia: Squamata: Agamidae). - Zoologische Abhandlungen, Staatliches Museum für Tierkunde, Dresden 51(2): 355-360.
37. Ziegler, T. & J. Köhler (2001): Rhacophorus orlovi sp. n., ein neuer Ruderfrosch aus Vietnam (Amphibia: Anura: Rhacophoridae). - Sauria, Berlin 23(3): 37-46.
36. Ziegler, T., Lehr, E. & J. Unger (2001): Zur Kenntnis von Psomophis genimaculatus (Boettger, 1885) in Paraguay unter besonderer Berücksichtigung des Defensiv-Verhaltens. - herpetofauna, Weinstadt 23(132): 19-23.

2000

35. Ziegler, T., Herrmann, H.-W., David, P., Orlov, N. & O. S. G. Pauwels (2000): Triceratolepidophis sieversorum, a new genus and species of pitviper (Reptilia: Serpentes: Viperidae: Crotalinae) from Vietnam. - Russian Journal of Herpetology, Moskau 7(3): 199-214.
34. Böhme, W., Schmitz, A. & T. Ziegler (2000): A review of the West African skink genus Cophoscincopus Mertens (Reptilia: Scincidae: Lygosominae): resurrection of C. simulans (Vaillant, 1884) and description of a new species. - Revue suisse de Zoologie, Geneva 107(4): 777-791.
33. Ziegler, T. & H.-W. Herrmann (2000): Preliminary list of the herpetofauna of the Phong Nha - Ke Bang area in Quang Binh province, Vietnam. - Biogeographica, Paris 76(2): 49-62.
32. Ziegler, T. & W. Böhme (2000): Zur Genitalmorphologie der Blauzungenskinke (Scincidae: Lygosominae: Tiliqua). In: Hauschild, A., Henle, K., Hitz, R., Shea, G. M. & H. Werning (eds.): Blauzungenskinke. Beiträge zu Tiliqua und Cyclodomorphus: 45-52. - Natur und Tier Verlag, Münster: 287 pp.
31. Hitz, R. & T. Ziegler (2000): Zur Geschlechtsunterscheidung bei Blauzungenskinken (Sauria: Scincidae: Tiliqua). In: Hauschild, A., Henle, K., Hitz, R., Shea, G. M. & H. Werning (eds.): Blauzungenskinke. Beiträge zu Tiliqua und Cyclodomorphus: 35-44. - Natur und Tier Verlag, Münster: 287 pp.

1999

30. Ziegler, T. & G. Vogel (1999): On the knowledge and specific status of Dendrelaphis ngansonensis (Bourret, 1935) (Reptilia: Serpentes: Colubridae). - Russian Journal of Herpetology, Moskau 6(3): 199-208.
29. Ziegler, T. & S. Weitkus (1999): Zur Herpetofauna eines nordvietnamesischen Küstenbiotops: Einnischung und Mageninhaltsuntersuchungen. Teil 2. - herpetofauna, Weinstadt 21(123): 25-33.
28. Glaw, F., Vences, M. & T. Ziegler (1999): Bemerkungen zu Phelsuma dubia (Boettger, 1881): Wiederentdeckung des Holotypus, Verwandtschaftsbeziehungen und Daten zur Fortpflanzung. - Salamandra, Rheinbach 35(4): 267-278.
27. Ziegler, T. & W. Bischoff (1999): Takydromus (Platyplacopus) kuehnei vietnamensis ssp. n., eine neue Schnelläufereidechsen-Unterart aus Vietnam (Reptilia: Squamata: Lacertidae). - Salamandra, Rheinbach 35(4): 209-226.
26. Fritz, U. & T. Ziegler (1999): Contribution to the knowledge of Cyclemys tcheponensis (Bourret, 1939) and the distribution of Cyclemys in the Indochinese region (Reptilia: Testudines: Bataguridae). - Revue française Aquariologique, Nancy 26(1/2): 71-78.
25. Ziegler, T., Böhme, W. & W. Bischoff (1999): Comments on the grass lizards (Lacertidae: Takydromus) of Vietnam and Myanmar. - Hamadryad, Tamil Nadu 24(1): 39-42.
24. Ziegler, T. & S. Weitkus (1999): Zur Herpetofauna eines nordvietnamesischen Küstenbiotops: Einnischung und Mageninhaltsuntersuchungen. Part 1. - herpetofauna, Weinstadt 21(121): 24-34.
23. Philipp, K. M., Böhme, W. & T. Ziegler (1999): The identity of Varanus indicus: Redefinition and description of a sibling species coexisting at the type locality (Sauria: Varanidae: Varanus indicus group). - Spixiana, München 22(3): 273-287.
22. Ziegler, T. (1999): A Vietnamese trapping technique for capturing butterfly lizards (Leiolepis). - Herpetological Review, Clovis 30(3): 153-154.
21. Ziegler, T., Philipp, K. M. & W. Böhme (1999): Zum Artstatus und zur Genitalmorphologie von Varanus finschi Böhme, Horn et Ziegler, 1994, mit neuen Verbreitungsangaben für V. finschi und V. doreanus (Meyer, 1874) (Reptilia: Squamata: Varanidae). - Zoologische Abhandlungen, Staatliches Museum für Tierkunde, Dresden 50(2): 267-279.
20. Fritz, U., Niekisch, M. & T. Ziegler (1999): Rediscovery of the holotype of Geoemyda tcheponensis Bourret, 1939 (Reptilia: Testudines: Bataguridae). - Zoologische Abhandlungen, Staatliches Museum für Tierkunde, Dresden 50(2): 243-247.
19. Ziegler, T. & W. Böhme (1999): Genital morphology and systematics of two recently described monitor lizards of the Varanus (Euprepiosaurus) indicus group. In: Horn, H.-G. & W. Böhme (eds.): Advances in monitor research II: 121-128. - Mertensiella, Rheinbach 11: 1-366.
18. Ziegler, T., Böhme, W. & K. M. Philipp (1999): Varanus caerulivirens sp. n., a new monitor lizard of the V. indicus group from Halmahera, Moluccas, Indonesia (Squamata: Sauria: Varanidae). - Herpetozoa, Wien 12(1/2): 45-56.
17. Feiler, A. & T. Ziegler (1999): Zur Kenntnis zweier Crocidura-Arten aus dem nördlichen Vietnam: Crocidura attenuata Milne-Edwards, 1872 und Crocidura spec. (Mammalia: Insectivora: Soricidae). - Faunistische Abhandlungen, Staatliches Museum für Tierkunde, Dresden 21(2): 377-384.
16. Vences, M., Ziegler, T., Visser, S. & F. Andreone (1999): New data on the zoogeography and genital morphology of the lizards Zonosaurus brygooi Lang & Böhme 1990 and Z. aeneus (Grandidier 1872) from Madagascar (Reptilia: Squamata: Gerrhosauridae). - Tropical Zoology, Florenz 12(1): 145-155.
15. Glaw, F., Vences, M., Ziegler, T., Böhme, W. & J. Köhler (1999): Specific distinctness and biogeography of the dwarf chameleons Brookesia minima, B. peyrierasi and B. tuberculata (Reptilia: Chamaeleonidae): evidence from hemipenial and external morphology. - Journal of Zoology, London 247: 225-238.

1998

14. Böhme, W. & T. Ziegler (1998): Comment on the proposed conservation of the names Hydrosaurus gouldii Gray, 1838 and Varanus panoptes Storr, 1980 (Reptilia, Squamata) by the designation of a neotype for Hydrosaurus gouldii. - Bulletin of Zoological Nomenclature, London 55(3): 173-174.
13. Ziegler, T., Hoang, Q. X. & W. Böhme (1998): Beitrag zur Kenntnis der Schnelläufer-Eidechsen Vietnams (Reptilia: Lacertidae: Takydromus). - herpetofauna, Weinstadt 20(114): 24-34.
12. Ziegler, T. & W. Böhme (1998): Comment on the proposed conservation of the specific name of Varanus teriae Sprackland, 1991 (Reptilia, Squamata). - Bulletin of Zoological Nomenclature, London 55(2): 111-113.

1997

11. Böhme, W. & T. Ziegler (1997): Varanus melinus sp. n., ein neuer Waran aus der V. indicus-Gruppe von den Molukken, Indonesien. - herpetofauna, Weinstadt 19(111): 26-34.
10. Böhme, W. & T. Ziegler (1997): A taxonomic review of the Varanus (Polydaedalus) niloticus (Linnaeus, 1766) species complex. - Herpetological Journal, London 7(4): 155-162.
9. Ziegler, T. & W. Böhme (1997): Genitalstrukturen und Paarungsbiologie bei squamaten Reptilien, speziell den Platynota, mit Bemerkungen zur Systematik. - Mertensiella, Rheinbach 8: 1-207.
8. Joger, U., Lenk, P., Baran, I., Böhme, W., Ziegler, T., Heidrich, P. & M. Wink (1997): The phylogenetic position of Vipera barani and of V. nikolskii within the Vipera berus complex. In: Böhme, W., Bischoff, W. & T. Ziegler (eds.): Herpetologia Bonnensis: 185-194. - Proceedings of the 8th ordinary general meeting of the Societas Europaea Herpetologica, Bonn: 414 pp.
7. Böhme, W. & T. Ziegler (1997): On the synonymy and taxonomy of the Bengal monitor lizard, Varanus bengalensis (Daudin, 1802) complex (Sauria: Varanidae). - Amphibia-Reptilia, Leiden 18(2): 207-211.
6. Ziegler, T., Vences, M., Glaw, F. & W. Böhme (1997): Genital morphology and systematics of Geodipsas Boulenger, 1896 (Reptilia: Serpentes: Colubridae), with description of a new genus. - Revue suisse de Zoologie, Geneva 104(1): 95-114.

1996

5. Ziegler, T., Vences, M., Glaw, F. & W. Böhme (1996): Remarks on the genital morphology of the Malagasy snake genus Liophidium (Reptilia, Serpentes, Colubridae). - Acta Biologica Benrodis, Düsseldorf 8(1/2): 157-159.
4. Ziegler, T. & W. Böhme (1996): Über das Beutespektrum von Varanus dumerilii (Schlegel, 1839). - Salamandra, Rheinbach 32(3): 203-210.
3. Ziegler, T. & W. Böhme (1996): Neue Erkenntnisse zur Geschlechtsunterscheidung bei squamaten Reptilien. - Kleintierpraxis, Alfeld 41(8): 585-590.
2. Ziegler, T. & W. Böhme (1996): Zur Hemiclitoris der squamaten Reptilien: Auswirkungen auf einige Methoden der Geschlechtsunterscheidung. - herpetofauna, Weinstadt 18(101): 11-19.

1994

1. Böhme, W., Horn, H.-G. & T. Ziegler (1994): Zur Taxonomie der Pazifikwarane (Varanus indicus-Komplex): Revalidierung von Varanus doreanus (A. B. Meyer, 1874) mit Beschreibung einer neuen Unterart. - Salamandra, Frankfurt a. M. 30(2): 119-142.

UNIVERSITÄT ZU KÖLN

Mathematisch-Naturwissenschaftliche FakultätInstitut für Zoologie

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