昆明金线鲃属三新种记述

The three new species of Sinocyclocheilus from Kunming,Yunnan

描记采于昆明官渡区和西山区金线属鱼类3新种,分别命名为官渡金线SinocyclocheilusguanduensisLietXiao,sp nov,黄龙洞金线SinocyclocheilushuanglongdongensisLietXiaosp nov和何氏金线SinocyclocheilusheiLietXiaosp nov。官渡金线侧线鳞平均72 4(66～76),侧线上鳞平均30(29～31),侧线下鳞18～19,与滇池金线上述3种鳞片61 6(58～69)、22(18～26)和11～12显著不同,两者分子遗传距离4 2%～4 5%表明是两个不同物种;黄龙洞金线口须长,吻须后伸过眼后缘,颌须后伸达前鳃盖骨后缘,体鳞细小,背鳍前体背大部裸露无鳞或细鳞隐于皮下,而显著不同于滇池金线,两者分子遗传距离2 2%～2 4%,亦表明为不同种;何氏金线以鳃耙3～4,侧线鳞80以上,口须长等与滇池金线鳃耙5～6,侧线鳞58～69,口须短明显不同。

The present paper gives descriptions of the three new species in Sinocyclocheilus collected from Kunming,Yunnan,China.The all type specimens are deposited in Heilongtan Reservoir of Shilin Yunnan, China,including(i)Sinocyclocheilus guanduensis Li et Xiao sp.nov,Holotype 990808005 standard body length 124 mm, collected from Jinxiandiaohulu longan Guandu Kunming ( N25°30′,102°58′E) August 1999, Paratype 11 specimens No.990808006-016 standard body longth 68-112 mm,collected from the same as the holotype.Description:D,iii,7;A,ii,5;P,I,13-16;V,I,8;C,I,16,I,Gill- rakers 5-6, LS,6629-3118-19-v76,Pharynaeal teeth 2.3.4/4.3.2 Standard length 3.00-4.00(3.35), head length 3.26-3.92(3.52), length of caudal peduncle 4.17-5.00(4.75), depth of caudal peduncle 7.50-10.00(8.50), Snout in head 2.80-3.25(3.00),eye 5.20-6.50(6.00), interorbital 2.80-3.25(3.00), Depth of caudal peduncle 1.50-2.06(1.80) in its length.Diagnosis: The new species is similar to S.grahami (Regan) 1904, but differs from the latter in: ①lateral line scales 6629-3118-19-v76(mean=72.4 3018.5),Vs 5818-2611-12-v69(mean=61.62211.5),②Barbels length; Vs short,③distance heredity of molecule 4.2 %-4.5 %;(ii)Sinocyclocheilus huanglongdongensis Li et Xiao, sp.nov,Holotype 990807006 Standard body length 110 mm, collected from the Huanglongdong cave Guandu district Kunming (25°05′N, 102°45′E), August 7, 1999, Paratype 1,specimens No.990807007, Standand body length 118 mm, collected from the same as the holotype.Description:D,iii,7;A,ii,5;P,I,14;V,I,8;C,I-16-i.Gill-rakers 5-6,LS 71-74, Pharynaeal teeth 2.3.4/4.3.2.Body depth in standard length 3.33-3.60, head length 3.28-3.33, length of caudal peduncle 4.40-4.45, depth of caudal peduncle 9.07-9.20. snout in head 3.20-3.30, eye 5.50-5.60, interorbital(3.27-3.6).Depth of caudal peduncle 2.00-2.18 in its length.Diagnosis: The new species is similar to S.grahami (Ragan) but differs from the latter in :①Without scales of in front back body; ②Barbels length, Vs short; ③distance heredity of molecule 2.2 %-2.4 %;(iii)Sinocyclecheilus hei Li et Xiao sp.nov,Holotype: 020409001 Standard body length 124mm, collected from the longtan Shalang,Xishan district,Kunming (25°10′N, 102°30′E)April 19,2002, Paratype 12 specimens No.020409002-012 030526001 Standard body length 52-156 mm,collected from the same as the holotype.Description: D,iii,7;A,ii,5;P,I,14-16;V,I,8'C,I-16-i.Gill-rakers.3-4,L.S 8628-3118-22-v91, Pharynaeal teeth 2.3.4/4.3.2。Body depth in standard length 3.48-4.25(3.73), head length 3.47-4.00(3.51), Length of caudal peduncle 4.57-5.33(4.76), depth of caudal peduncle 7.29-8.67(7.88), Snout in head 2.71-3.40(3.12). eye 4.00-6.20(5.16), inlerorbital 2.82-3.75(3.22).Depth of caudal peduncle 1.44-1.86(1.67) in its length.Diagnosis: The new species is similar to S.grahami(Regan) but differs from the latter in:①Lateral line scales 8628-3118-22-v91, Vs 5818-2611-12-v69,②Gill-rakers 3-4,Vs 5-6,③Barbels length; Vs short,④large black macula in lateral line.