摘要
During revision of the genus Microphysogobio Mori,1934,we discovered a new species of Huigobio from the Yangtze River Basin in China.The new species,named Huigobio heterocheilus sp.nov.,can be distinguished from its congeners by a combination of the following characters:medial pad on lower lip not visible;ventral region scaleless before pelvic-fin insertion;lateral-line scales 39-40;caudal peduncle depth 49.2%-59.1%of length;barbel length 6.6%-10.7%of head length;black blotch between anterior margin of eye and upper lip.Using the K2P model and cytochrome b(cyt b)sequences,interspecific genetic distances between the new species and Huigobio exilicauda Jiang&Zhang,2013 and Huigobio chenhsienensis Fang,1938 were 13.2%and 15.1%,respectively.The new species is known from the upper reaches of the Xiangjiang River in the middle Yangtze River Basin.A diagnostic key for species of Huigobio Fang,1938 is provided.
基金
supported by the National Natural Science Foundation of China(31972868)
National Science&Technology Fundamental Resources Investigation Program of China(2019FY101800)
Sino BON-Inland Water Fish Diversity Observation Network。
