浙江缨口鳅属鱼类一新种（鲤形目：平鳍鳅科）

A new species of the genus Crossostoma from Zhejiang Province,

摘要:

记述了采自浙江庆元县的缨口鳅属(Crossostoma)鱼类一新种，即亮斑缨口鳅(Crossostoma galericula Zhang sp.nov.)。测量标本均采自同一地点，体长35.0～46.5 mm。背鳍条III-8；臀鳍条II-5；胸鳍条I-13；腹鳍条I-8；侧线鳞91～97。体长为体高的5.1～5.4倍，为体宽的5.4～7.0倍，为头长的3.7～3.9倍，为尾柄长的5.9～6.6倍，为尾柄高的7.2～8.8倍，为背鳍前距的1.9～2.0倍，为腹鳍前距的1.8～1.9倍。头长为头高的1.5～1.6倍，为头宽的1.1～1.3倍，为吻长的1.8～2.1倍，为眼径的5.5～6.4倍，为眼间距的2.8～3.1倍。尾柄长为尾柄高的1.1～1.3倍。头宽为口裂宽的2.2～2.5倍。新种吻褶具13条吻须，吻须基部均与吻褶相连，排成1排；与近似种横纹缨口鳅(C.fasciolatus)相比，新种有如下明显的区分特征：（1）最长吻须与眼径等长；（2）背鳍基后部两侧具1对亮斑；（3）各鳍均无明显的斑纹；（4）腹部裸区延伸至腹鳍起点。

Abstract:

The present paper reports a new species of Crossostoma collected from Zhejiang Province，China.Crossostoma galericula Zhang sp. nov.（Fig. 1）. Holotype: ZH070616, total length 54.1 mm, standard length 43.0 mm, collected in June, 2007 from a rivulet in Hehu Town, Qingyuan County, Zhejiang Province, China. Paratypes: 3 specimens, ZH070618（57.5 mm TL, 46.5 mm SL）, ZH070621（50.5 mm TL, 41.0 mm SL）and ZH070622（43.4 mm SL, 35.0 mm SL）. All paratypes have the same locality and same time as the holotype. D. III-8; A. II-5; P. I-13; V. Ii-8. Scales in L. l. 91-97. Depth of body in standard length 5.1-5.4, width of body 5.4-7.0, length of head 3.7-3.9, length of caudal peduncle 5.9-6.6, depth of caudal peduncle 7.2-8.8. Depth of head in head length 1.5-1.6, width of head 1.1-1.3, length of snout 1.8-2.1, diameter of eye 5.5-6.4, width of interorbital space 2.8-3.1. Depth of caudal peduncle in length of caudal peduncle 1.1-1.3. Width of mouth in width of head 2.2-2.5. Diagnosis: the new species has 13 sub-rostral barbells on the rostral fold. Bases of the rostral barbells are always connected to the rostral fold, and arranged in 1 row. This new species is similar to C. fasciolatus. But it can be distinguished from C. fasciolatus by the following comparisons: (1) the length of the longest rostral barbell is equal to the diameter of eye; (2) with 2 bright spots behind the sides of the dorsal fin; (3) all fins have no obvious spot; (4) naked area in abdomen extends to the base of the ventral fin.