【摘 要】
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Triplophysa xuanweiensis sp.nov.,a new blind loach species from the family Nemacheilidae,is described based on specimens collected from a subterranean river in Xuanwei City,Yunnan Province,China.The new species can be distinguished from all known congener
【机 构】
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Key Laboratory of Zoological Systematics and Evolution,Institute of Zoology,Chinese Academy of Scien
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Triplophysa xuanweiensis sp.nov.,a new blind loach species from the family Nemacheilidae,is described based on specimens collected from a subterranean river in Xuanwei City,Yunnan Province,China.The new species can be distinguished from all known congeners by a combination of the following characters:eyes absent,dorsal-fin origin anterior to pelvic-fin origin,tip of pelvic fin reaching anus,dorsal fin with 7-8 branched rays,caudal fin forked with 16-18 branched rays,body scaleless and colorless,lateral line complete,and posterior chamber of air bladder well developed and connected to anterior chamber by long,slender tube.Maximum-likelihood phylogenetic analysis based on the cytochrome b(cyt b)gene placed Triplophysa xuanweiensis sp.nov.in a well-supported clade with seven other species of the genus,and three specimens of the new species formed a monophyletic group,consistent with morphological comparisons.
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