文章摘要
张晓锋,王火根.浙江缨口鳅属鱼类一新种(鲤形目:平鳍鳅科)[J].上海海洋大学学报,2011,20(1):85-88
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,
  
DOI:
中文关键词: 鲤形目  平鳍鳅科  缨口鳅属  新种
英文关键词: Cypriniformes  Homalopterodae  Crossostoma  new species
基金项目:浙江海洋学院青年基金项目(X06LQ14)
作者单位
张晓锋 浙江海洋学院 萧山科技学院 
王火根 浙江自然博物馆 
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中文摘要:
      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。
英文摘要:
      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.
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