广西金线鲃属一新种

A NEW SPECIES OF Sinocyclocheilus FROM GUANGXI,CHINA

描记采于广西凌云县泗城镇沙洞地下河中的金线属 1新种 ,以采集地县名命名为凌云金线Sinocyclocheiluslingyunensissp nov 。新种以侧线鳞 71～ 78对 48～ 5 0 ;背鳍最末不分枝鳍条下半部为硬刺 ,后缘有锯齿对纤细柔软 ,光滑无锯齿等特征区别于相近种季氏金线S jiiZhangetDai。

This paper describes a new species of the genus Sinocyclocheilus Fang 1936,collected from the cave Shadong in Lingyun County,Guangxi,China.(Fig 1) Holotype No 990418004,total length 137?mm,standard length 110?mm,collected on April 18,1999 from Shadong of Lingyun County (24°20′N,106°32′E,altitude 470?m) in Guangxi Province.Paratype 12 specimens No 990418002-03,990418005-08,990420001-02,990422001-04.Total length 84-174?mm,standard length 64-137?mm,collected with the holotype. Description:D iii,7;P i,11-13;V i,7-8;A iii 5;Branched caudal fin rays 16.Lateral lin scales 71-78.Gill rakers 2+7-8.Pharyngeal teeth 3 rows 2 3 5/5 3 2 Body depth in standard length 2 97-3 55(3 18),head length 3 44-4 03(3 73),length of caudal peduncle 4 06-5 33(4 85),depth of caudal peduncle 6 60-8 00(7 25).Snout in head 2 42-3 00(2 74),eye 6 00-11 33(8 46),interorbital 2 42-3 00(2 80).Depth of caudal peduncle 1 30-1 60(1 46) in its length. Diagnosis:The new species is similar to S jii Zhang et Dai 1992,but differs from the latter in:①laterallinescales7114-178-11-Ⅴ78;Vs4822-2417-19-Ⅴ50:②harnen and serrated of last unbranched drosal ray;Vs smooth,slender and soft:③barbel long and sturdy.④eye in head 6 00-11 33(8 46);Vs 6 6. All type specimens are kept in Heilongtan Reservoir of Shilin County,Yunnan Province,and the Department of Biology of Yunnan University.