云南东部云南鳅属二新种记述(鲤形目:鳅科)

TWO NEW SPECIES OF YUNNANILUS FROM EASTERN YUNNAN,CHINA(CYPRINIFORMES:COBITIDAE)

描记采于云南东部南盘江水系的云南鳅属鱼类 2新种 ,以其形态特征分别命名为大鳞云南鳅YunnanilusmacrolepisLi,TaoetMao ,sp nov 和长背云南鳅YunnaniluslongidorsalisLi,TaoetLu ,sp nov 。

The present paper gives descriptions of the two new species in Yunnanilus collected from Eastern Yunnan Province,China.The type specimens are deposited in Reservoir of Heilongtan,lunan,Yunnan and Institute of Zoology,Chinese Academy of Sciences. Yunnanilus macrolepis Li,Tao et Mao,sp nov (Figs 1 3) Holotype,No 9307001 Standard body length 92?mm,collected from Xuetian Longan(24°50′N,104°20′E),Luoping County,Yunnan,Jul 1993 Paratypes 8 specimens,No.9307002 03,9509001 06,body length 61 92?mm,collected from the same locality as the holotype D iii 7 8;A ii 5;P i 9 10;C 14 15;vertebrae 4+(34 35)+1(2 specimens) Gill rakers 15 on the inner row of the first gill arch Body depth in standard body length 4 8 6 1(5 1),head length 4 1 4 7(4 3),length of caudal peduncle 6 1 9 0(7 9),depth of caudal peduncle 8 3 10 7(9 3) Snout in head length 2 4 3 2(2 7),eye 5 3 8 0(5 8),interobital width 2 5 3 8(3 2) Depth of caudal peduncle in its length 1 0 1 4(1 2) Diagnosis.This new species distinguishes from as far as known within the same genus,by the followings given:1) with rather large and dense scales on body surface;2) distance from origin of dorsal fin equals it to caudal fin base;3) lateral line incomplete,only appears on 3 7 scales;4) barbels much longer Yunnanilus longidorsalis Li,Tao et Lu,sp nov (Figs.4 6) Holotype No 9411001,standard body length 37?mm,collected from Longtan Pool Agang (25°04′N,104°07′E) ,Luoping County,Yunnan,Nov 1994 Paratypes 10 specimens No 941102 03,9204006,9506001 07,standard body length 29 37?mm,collected from the same locality as the holotype D iii 11;P i 10 11;V i 6;A ii 6;C i 14 i Gill rakers 8 on the inner row of the first arch,vertebrae 4+32+1(1 specimen) Body depth in standard body length 3 5 4 6(3 9),head length 3 5 4 1(3 8),length of caudal peduncle 5 4 8 2(6 4),depth of caudal peduncle 10 3 12 3(11 0) Snout in head length 1 9 2 6(2 2),eye 3 0 4 5(3 6),interobital width 1 9 2 6(2 2) Depth of caedal peduncle in its length 1 2 1 7(1 5) Diagnosis This new species differs from Y nigromaculatus (Regan), Y yangzonghaiensis Cao et Zhu, Y caohaiensis Ding and Y obtusirostris Yang in the following aspects:dorsal fin iii 11 and anal fin ii 6