贵州金线鲃属鱼类一新种记述(鲤形目,鲤科)

A New Species of Sinocyclocheilus in Guizhou,China

描记采于贵州省荔波县茂兰自然保护区范围内的尧兰村地下河中的金线鲃属一新种,命名为尧兰金线鲃Sinocyclocheilus yaolanensis Zhou,Li et Hou,sp. nov。新种的胸鳍、腹鳍和臀鳍等性状以及体形大致与东兰金线鲃Sinocyclocheilus donglanensis和高肩金线鲃Sinocyclocheilus altishoulderus相似。但是,新种的侧线鳞与二者都具有一定差距,新种的侧线鳞为52(20-21)/(10-11)54;东兰金线鲃为44(14-17)/(9-11)52;高肩金线鲃为54(14-17)/(9-11)58。

A new species, Sinocyclocheilus yaolanensis Zhou, Li et Hou, sp. nov, is described in this paper. Holotype No. 2006100060, with a total length of 154.04 mm and a standard length of 124.52 mm, was collected in October, 2006 from a subterranean river in Yaolan Village of Libo County in Guizhou Province （E 107°55＇3.5＂, N 25°18＇41. 9＂）. Paratype specimen No. 2006100057, with a total length of 128.70 mm and a standard length of 101.80 mm, was collected as the holotype at the same time and at the site. Description： D, iii-8; A, ii-5; P, i-15-16; V, ii -8. Branched caudal fin 20 - 21 rays 9, lateral line scales 52 20-21/10-11 54. Gill-raker 12 - 14. Pharyngeal teeth 3 rows, 2.3.4/4.3.2. Diagnosis： The new species is similar to S. donglanensis and S. altishoulderus, but differs from the two latters in ： （ 1 ） The lateral line scales are larger than that of body scales. Vs lateral scales equals body scales of the two analogical species. And the lateral line scales of the new species is 52 20-21/10-11 54, vs 44 14-17/9-11-v 52 and 54 14-17/9-11-v 58. （2） Gill-rakers 12 - 14, vs 10 - 12 and 0 - 12 and 4 - 5. （3） The pharyngeal teeth 3 rows, 2.3.4/4.3.2 are different with 2.3.5/5.3.2 of S. altishoulderus. （4） The new species is distributed in Liujiang River, vs S. donglanensis and A. altishoulderus which are distributed in Youjiang River and a branch of the Hongshuihe River. All specimens are kept in the Specimen Museum of the College of Life Sciences, Guizhou Normal University.