贵州金线鲃属鱼类一新种(鲤形目:鲤科:鲃亚科)  

A new species of sinocyclocheilus from Guizhou, China (Cypriniformes: Cyprinidae: Barbinae)

作　　者：王大忠[1] 廖吉文[1] 

机构地区：[1]遵义医学院生物学教研室

出　　处：《遵义医学院学报》1997年第2期1-3,共3页Journal of Zunyi Medical University

基　　金：国家自然科学基金;贵州省科技基金

摘　　要：报道了1990年5月采自贵州省兴仁县（北盘江水系）的金线属鱼类一新种Sinocyclocheilusbicornutus,sp．nov。其与相似种SinocyclocheilusangularisZhengetWang的主要区别在于：前者顶部突起外形和内部骨骼均呈分叉状，后者则都不分叉。This paper reported a new species of Sinocyclocheilus. It was named as Sinocyclocheilus bicornutus..Sinocyclocheilus bicornutus, sp. nov. (fig. 1)Holotype No. 9050242, total length 112 mm, standard length 90mm.Paratypes 8: No. 9050241, 9050243 to 9050249, total length 72 to 150 mm, stan-dard length 56 to 122 mm. All the type specimens were collected from an under-groud river in Xingren County (107°07'~107°43'E, 27°29'~ 27°29'N) (XijiangRiver system) of Guizhou Province, China, in May, 1990. They were kept respec-tively in the Institute of Hydrobiology., the Chinise Academy of Sciences and the Department of Biology, Zunyi Medical College.Description Dorsal rays, Ⅳ, 7;anal,Ⅲ, 5; pectoral, I, 13 to 15; ventral,I, 7 to 9. Gill rakers, 7 to 9. Pharyngeal teeth, 2. 3. 4-4. 3. 2 or 1. 3. 4-4. 3. 1-Scales in lateral line, 36 to 40. Vertebrae, 4+32 or 33.Body depth in standatd length, 3.0 to 3. 5; head length, 3. 1 to 3. 4; length of caudal peduncle, 4. 3 to 5. 4 and its depth, 7. 7 to 8. 2. Length of snout in head length, 2. 2 to 2. 8; diameter of eye, 11. 0 to 27. 0 and width between eyes, 3. 6 to 4. 5. Depth of caudal peduncle in its length, 1. 4 to 1. 7.Diagnosis This new species resembles S. angularis Zheng et Wang, but the former has a bifurcated parietai protrusion, while the latter has one unbifurcated.

关 键 词：鲤科 金线Ba属 双角金线Ba 新种 

分 类 号：Q959.468[生物学—动物学]