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Zoological Research    2017, Vol. 38 Issue (5) : 291-299     DOI: 10.24272/j.issn.2095-8137.2017.065
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A new species of sisorid catfish of the genus Exostoma from the Salween drainage, Yunnan, China
Xiao-Yong Chen1,2*, William J. Poly3, David Catania3, Wan-Sheng Jiang2
1 Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences, Yezin Nay Pyi Taw 05282, Myanmar;
2 Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming Yunnan 650223, China;
3 Department of Ichthyology, California Academy of Sciences, 55 Music Concourse Drive, San Francisco CA 94118, USA
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Abstract  A new species of the sisorid catfish genus Exostoma Blyth, 1860 was collected from two hill-stream tributaries of the Nujiang (Salween River) drainage in Gaoligong Mountain, south-western Yunnan Province, China from 2003 to 2006 and from two tributaries of the Salween River in Cangyuan County, Lingcang Prefecture, Yunnan Province, China (in 2007) and in Yongde County, Lingcang Prefecture, Yunnan Province, China (in 2015). Exostoma gaoligongense sp. nov. is the 10th species of the genus and is most similar to E. vinciguerrae in morphology but can be distinguished by pelvic fin reaching anus vs. not reaching; maxillary barbels just reaching or slightly surpassing pectoral-fin origin vs. surpassing pectoral-fin origin or even reaching posterior end of gill membrane; abdominal vertebrae 23-25 vs. 25-27; length of dorsal fin/dorsal to adipose distance 90.3%-287.0% vs. 59.2-85.7. A key to Exostoma spp. is provided.
Keywords Glyptosterninae      Sisoridae      Nujiang      Gaoligong Mountain      Yunnan     
Fund:This work was funded by the Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences (Y4ZK111B01) to Xiao-Yong Chen, and the NSF project "Gaoligong Shan Biological Survey Project" (DEB-0103795) to J. Slowinski and P. Fritsch, California Academy of Sciences and National Geographic Society grant (7340-02) to P. Fritsch and N. Jablonski, and National Natural Science Foundation of China (31372182) to WS Jiang  
Corresponding Authors: Xiao-Yong Chen,    
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Xiao-Yong Chen, William J. Poly, David Catania, Wan-Sheng Jiang. A new species of sisorid catfish of the genus Exostoma from the Salween drainage, Yunnan, China. Zoological Research, 2017, 38(5): 291-299.
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