中国刺鳅属鱼类分类整理及两新种和一新纪录(鲈形目,刺鳅科)(英文)

A REVIEW OF THE GENUS MASTACEMBELUS(PERCIFORMES,MASTACEMBELOIDAE) IN CHINA WITH DESCRIPTIONS OF TWO NEW SPECIES AND ONE NEW RECORD

系统整理了中国刺鳅属鱼类Mastacembelus,记述2新种,腹纹刺鳅M.strigiventus Zhouet Yang,sp.nov.和三叶刺鳅M.triolobus Zhouet Yang,sp.nov.及中国1新纪录种,云斑刺鳅M.oatesii(Boulenger)。新种模式标本分别保存于中国科学院昆明动物研究所(KIZ)鱼类标本库和西南林业大学(SWFC)。腹纹刺鳅与三叶刺鳅、大刺鳅的区别在于:背鳍、臀鳍与尾鳍基部大部愈合,但具缺刻相区分;体侧前部具4～5条褐色纵条纹,最下1条常断续,全部纵纹至肛门前方渐成网格交叉或断续;腹面亦具1条明显褐色纵纹,有时分歧形成小网格。三叶刺鳅区别于腹纹刺鳅及大刺鳅的主要特征包括:背鳍条、臀鳍条和尾鳍条数目均少;背鳍、臀鳍与尾鳍仅在基部相连,在端部分开,能明显区分;除背部的黑色大斑块外,体无六角状环纹或锯齿状纹,腹面亦无斑纹;头长为头宽3.5倍以下,为吻长2.8倍以下。云斑刺鳅以下面组合特征区别于三叶刺鳅和腹纹刺鳅:背鳍条,臀鳍条数目均少,尾鳍条数目相对较多;背鳍、臀鳍与尾鳍仅基部愈合;体侧具云状斑,背部具14～15个褐色斑块,腹面无纵纹或网眼斑;头长为头宽4.0倍以上,为吻长3.0倍以上。

This paper deals with the taxonomy of the genus Mastacembelus in China. Two new species,Mastacembelus strigiventus Zhou et Yang,sp. nov. and Mastacembelus triolobus Zhou et Yang,sp. nov.,and a new record species for China,Mastacembelus oatesii （Boulenger） were described. Types were deposited in the Kunming Institute of Zoology （KIZ）,Chinese Academy of Sciences and the Southwest Forestry University （SWFC）. The diagnostic characteristics of Mastacembelus strigiventus sp. nov. are：dorsal,anal,and caudal fins almost entirely joined,but with distinct notches among dosal-fin,anal-fin and caudal-fin outline; body sides and back with 4-5 zig-zag longitudinal lines and forming a network from front of anal origin to caudal base; a longitudinal brown line from the isthmus to anus on the abdomen or sometimes the line becoming a network. Mastacembelus triolobus sp. nov. can be distinguished from all congeners of the genus in China by the combination of the following characteristics：fewer dorsal,anal and caudal fin rays,dorsal and anal fìns joined to caudal fìn only near its base,caudal-fìn outline entirely separate from that of dorsal and anal fìns; sides of body lacking marbling,network,or irregular dark brown blotches,except with 14-15 dark blotches on its back,abdomen grey without stripe; HL less than 3.5 times of HW,and 2.8 times of snout length. M. oatesii differs from all congeners in the genus in China in having more caudal fin rays,fewer dorsal and anal fin rays; dorsal and anal fins joined to caudal fin only near its base,caudal-fìn outline entirely separate from that of dorsal and anal fins; body with marbling or irregular dark brown blotches,abdomen light grey without lines or mesh patches; HL more than 4.0 times of HW,3.0 times of snout length.