贵州金线鲃属鱼类一新种记述(鲤形目,鲤科)

Description on a New Species of Sinocyclocheilus in Guizhou

描记2009年8月采自贵州省荔波县茂兰自然保护区内洞塘乡地下河中的金线鲃属一新种,命名为洞塘金线鲃Sinocyclocheilus dongtangensis Zhou,Liuet Wang,sp·nov,正模标本编号为:20091123005,全长213·02mm,体长167·12mm;副模标本编号:20091123002,全长182·36mm,体长139·26mm。背鳍ⅲ-8,臀鳍ⅲ-5,胸鳍ⅰ-15-16,腹鳍ⅱ-8,尾鳍分枝鳍条16,不分枝鳍条10,下咽齿3行,2·3·4-4·3·2。该种的胸鳍和臀鳍等性状以及体形大致与巨须金线鲃S.hugeibarbus、高肩金线鲃S.altishoulderus和尧兰金线鲃S.yaolanensis相似,但新种的侧线鳞和第1鳃弓鳃耙数与三者都有一定差距,新种的侧线鳞为652160--218667;巨须金线鲃为661428-1-631-v71;高肩金线鲃为5491-41-11-7v58;尧兰金线鲃为521200--211154。新种的第1鳃弓鳃耙数为15;巨须金线鲃为9～11;高肩金线鲃为10～12;尧兰金线鲃为12～14。

A new species,Sinocyclocheilus dongtangensis Zhou,Liu et Wang sp.nov,is described in this paper.Holotype No.20091123005,with a total length of 213.02 mm and a standard length of 167.12 mm,was collected in August,2009 from a subterranean river in Ligen village of Libo county in Guizhou province （108°01′05.9″E,25°15′24.7″N）.Paratype specimen No.20091123002 with a total length of 182.36 mm and a standard length of 139.26 mm was collected as the holotype at the same time and site.Description：D,ⅲ-8;A,ⅲ-5;P,ⅰ-15-16;V,ⅱ-8.Branched caudal fin rays 16,lateral line scales 6525-2616-1867.Pharyngeal teeth were 3 rows,2·3·4-4·3·2.Diagnosis：The new species is similar to S.hugeibarbus and S.altishoulderus and S.yaolanensis,but differs from the three species in： （1） The lateral line scales of the new species was 6525-2616-1867,vs the S.hugeibarbus was 6628-3114-16-v71,S.altishoulderus was 5414-179-11-v58 and S.yaolanensis was 5220-2110-1154.（2） Gill rakes of the new species was 15,vs 9~11 of S.hugeibarbus,10～12 of S.altishoulderus,and 12~14 of S.yaolanensis.All specimens were kept in the Specimen Museum of the College of Life Sciences,Guizhou Normal University.