摘要
研究了一些条鳅属鱼类的大量标本,对其分类问题澄清如下:巩乃斯条鳅在鳔、肠、脊椎骨等方面远不同于黑背条鳅,不该并入后一种。它可再分成指名亚种和东方亚种,elongatus为东方亚种异名,重繐唇条鳅以一系列性状充分区别于黑斑条鳅,因此恢复其单型种地位。武威条鳅鉴别性状发现不够充分有效与近似种硬鳍条鳅区分,作了修正。根据形态差异和在河西疏勒河弱水两水系同域分布,将尖体条鳅和短尾条鳅从高原条鳅的亚种提升为分立种。
A great many specimens of some nemachilus fishes have been studied and their taxonomic problems are cleared up as follows.N,kungessanus Kessler is far different from N.dorsalis in the shape of air-bladder,intestine and vertebrate counts.They should not be merged into one taxon under the name of A/.dorsalis,N.Kungessanus can be subdivided into two subspecies,i.e.,N.k.kungessanus Kessler,and N.k.orientalis with elongatus as a synonym.N.papilloso-labiatus is well different from N.strauchii in a series of characters.Both are considered to be valid monotypic species.The formerly used diagnoses of N.wuweiensis are discovered not effectively enough to differentiate from the relative species N.scleropterus and,therefore,are revised.Based on their morphological differences and sympatric distribution in both river systems of Shule He and Ruo Shui of the northern Gansu Province,N.leptosoma and N.brevicauda formerly treated as two subspecies of N.stoliczkae are raised to independent species taxa.
作者
赵铁桥
Zhao Tieqiao(Northwest Plateau Institute of Biology,Academia Sinica)
