A new species of mossy frog (Anura: Rhacophoridae) from Northeastern Vietnam

  • Hoa Thi Ninh Vietnam National Museum of Nature and Institute of Genome Research, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Hanoi, Vietnam
  • Tao Thien Nguyen Vietnam National Museum of Nature and Institute of Genome Research, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Hanoi, Vietnam https://orcid.org/0000-0002-5640-4536
  • Huy Quoc Nguyen Vietnam National Museum of Nature and Institute of Genome Research, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Hanoi, Vietnam
  • Ngoc Van Hoang Thai Nguyen University of Education, Thai Nguyen University, 20 Luong Ngoc Quyen, Thai Nguyen, Vietnam
  • Sonephet Siliyavong Thai Nguyen University of Education, Thai Nguyen University, 20 Luong Ngoc Quyen, Thai Nguyen, Vietnam
  • Thinh Van Nguyen Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam
  • Dzung Trung Le Ministry of Education and Training, 35 Dai Co Viet Road, Hai Ba Trung District, Vietnam
  • Quyet Khac Le Center for Biodiversity Conservation and Endangered Species, 541 Nguyen Duy Trinh Street, District 2, Hochiminh City, Vietnam
  • Thomas Ziegler AG Zoologischer Garten Köln, Riehler Strasse 173, D–50735 Cologne, Germany
Keywords: Theloderma khoii sp. nov., karst forest, molecular phylogeny, taxonomy, Ha Giang Province


We describe a new species of Theloderma from northeastern Vietnam based on morphological differences and molecular divergence. Theloderma khoii sp. nov. is distinguishable from its congeners on the basis of a combination of the following characters: large size, SVL 52.1 mm in male, 59.4 mm in female; head length and width equal; vomerine teeth present; snout pointed and truncated, eye large, ED 4.7 mm in male, 5.6 mm in female, spinules on upper eyelid; tibiotarsal articulation reaches to the posterior border of the eye or the tip of the snout; dorsal skin very rough with large irregular gland ridges and warts, ventral surface of body granular; tips of all digits dilated but all considerably smaller than tympanum; dorsal surface mossy green or olive mottled with dark magenta. The distribution of the new species is unknown but probably extends into adjacent high elevation forested areas in Ha Giang Province, Vietnam and in Yunnan Province, China with an extent of occurrence of only < 1000 km2 and continuing decline in the quality of its habitat due to deforestation. Thus, we suggest the species should be considered Endangered following IUCN’s Red List categories.


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How to Cite
Ninh, H. T., Nguyen, T. T., Nguyen, H. Q., Hoang, N. V., Siliyavong, S., Nguyen, T. V., Le, D. T., Le, Q. K., & Ziegler, T. (2022). A new species of mossy frog (Anura: Rhacophoridae) from Northeastern Vietnam. European Journal of Taxonomy, 794(1), 72–90. https://doi.org/10.5852/ejt.2022.794.1655
Research article