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How little is known about “the little brown frogs”:description of three new species of the genus Leptobrachella(Anura:Megophryidae)from Yunnan Province, China

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Zoological Research 2020年第3期41卷 292-313页

作者： Jin-Min Chen Kai Xu Nikolay A.Poyarkov Kai Wang Zhi-Yong Yuan Mian Hou Chatmongkon Suwannapoom Jian Wang Jing Che State Key Laboratory of Genetic Resources and Evolution Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China Southeast Asia Biodiversity Research Institute Chinese Academy of SciencesYezinNay Pyi Taw 05282Myanmar Kunming College of Life Science University of the Chinese Academy of SciencesKunmingYunnan 650204China Department of Vertebrate Zoology Biological FacultyLomonosov Moscow State UniversityMoscow 119991Russia Joint Russian-Vietnamese Tropical Research and Technological Center Nghia DoCau GiayHanoiVietnam Sam Noble Oklahoma Museum of Natural History&Department of Biology University of oklahomaNormanOklahoma 73072USA Key Laboratory for Conserving Wildlife with Small Populations in Yunnan Southwest Forestry UniversityKunmingYunnan 650224China College of Continuing(Online)Education Sichuan Normal UniversityChengduSichuan 610068China School of Agriculture and Natural Resources University of PhayaoPhayao 56000Thailand College of Life Science and Technology Honghe UniversityMengziYunnan 661199China

Asian leaf-litter toads of the genus Leptobrachella represent a great anuran diversification in Asia.Previous studies have suggested that the diversity of this genus is still underestimated. During herpetological surveys from 2013 to 2018, a series of Leptobrachella specimens were collected from the international border areas in the southern and western parts of Yunnan Province, China.Subsequent analyses based on morphological and molecular data revealed three distinct and previously unknown lineages, which we formally describe as three new species herein. Among them, we describe a new species that occurs at the highest known elevation for Leptobrachella in China. Four species of Leptobrachella, including two new species, are found in the same reserve. Furthermore, our results suggest that the population from Longchuan County,Yunnan, may represent an additional new species of Leptobrachella, although we tentatively assigned it to Leptobrachella cf. yingjiangensis due to the small sample size examined. Lastly, we provide the first description of females of L. yingjiangensis. Our results further highlight that both micro-endemism and sympatric distributions of species are common patterns in Leptobrachella, that contribute to taxonomic and conservation challenges in these frogs. We provide an identification key for Leptobrachella known to occur in Yunnan. Given the lack of knowledge on species diversity of Leptobrachella along international border areas, we recommend that future studies include transboundary collaborative surveys.

关键词： Biodiversity hotspot Conservation Cryptic diversity micro-endemism National border Speciation Taxonomy

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