云南金线鲃属鱼类一新种——文山金线鲃

A new species of Sinocyclocheilus from Yunnan:Sinocyclocheilus wenshanensis

描记采于云南省文山市的金线鲃属鱼类一新种,以采集地市名命名文山金线鲃(Sinocyclocheilus wenshanensis Li,Yang,Li et Chen sp.nov.).新种体侧分布有3行纵列圆斑,口亚下位,与分布于相邻的砚山县体侧布满不成纵列行的斑点,口亚上位的麻花金线鲃(S.maculatus Li 2000)可明显区别;新种体侧有3行黑色圆斑,侧线鳞67~72,背鳍起点在腹鳍起点之后,背鳍前长为体长的55.65%~59.50%,与体中有6~8个黑色圆斑,侧线鳞74~88,背鳍前长为体长的47.10%~53.70%,同为红河水系的西畴金线鲃(S.xichouensis Pan et al 2013)亦可明显区别.

Sinocyclocheilus wenshanensis sp. nov., Holotype, No. 20160725001, standard length （SL） 106 mm,was collected from a river in Wujiazhai （23023＇ N, 104005＇ E）, Wenshan county, Yunnan, on July 25th, 2016. Paratypes,No. 20160725002-005,SL 110--121 mm,were collected in the same locality as the holotype. All the specimens were kept in Reservoir of Heilongtan, Shilin, Yunnan.Description ： D. iii, 7 ; A. ii, 5 ; P. i, 13- 15;V. i,7-8; Branched caudal fin rays 15-16;lateral line scales 67-72;gill takers 7-9;pharyngeal teeth 3 rows （2.3.4/4.3.2）.Depth of body in standard body length 3.26-3.83 （3.62）, length of head 3.53-3.74 （3. 61） ,length of caudal peduncle 4.42-4.91 （4.62） ,depth of caudal peduncle 7.56-8.84 （8.23）.Snout in head 2.38--3.00 （ 2.62）, diameter of eye 6.00-10.33 （ 8.07）, interorbital space 2.83-3.75 （ 3.21 ） .Depth of caudal peduncle in its length 1.64-2.00 （ 1.83 ）. Diagnosis ： The new species is distinguished from S. maculatus Li （2000） by the following characteristics：（1） 3 rows longitudinal black spots （vs. spots arranged irregularly）.（2） mouth sub-inferior （vs. sub-superior）. The new species is also distinguished from S. xichouensis Pan et al （2013） by the following characteristics：（1） 3 rows longitudinal black spots （vs. six to eight black round spots）. （2） lateral line scales 67--72 （vs. 74--88）.（3） the ratio of predorsal length to standard length 55.65%--59.50% （vs. 47.10%--53.70%）.