摘要
2008年6月20日,在广西壮族自治环江毛南县大才乡神龙宫(河)采集到一批条鳅标本。经鉴定,这批条鳅为岭鳅属(Oreonectes)一新种。新种大鳞岭鳅(O.macrolepis)属于叉尾岭鳅种组(O.furcocaudalis group)。但新种全身被有细密的鳞片;具5—12个侧线孔;眶下管孔3+7,眶上管孔为7—8;体长为尾柄高的7.0—10.8倍;头长为鼻孔处头宽的2.3—2.7倍;头长为最大头宽的1.4—1.8倍。这些特征可将新种与该种组内的其他种类相区分。
A nemacheiline loach, Oreonectes macrolepis sp. nov. has been recognized based on collections from a Pearl River Drainage in Maonan County, Huanjiang City, Guangxi, China, in June 2008. Oreonectes macrolepis is a new member of the O. furcocaudalis group. It can be distinguished from all its congeners in this group by the following characters： body entirely covered by scales, except between pectoral fins and pelvic fins; lateral line present, with 5-12 pores; cephalic lateral line system with 3＋7 infraorbital pores and 7-8 supraorbital; Head length 2.3-2.7 times head width in nose; head length 1.4-1.8 times maximum head width; Standard length 7.0-10.8 times caudal-peduncle depth.
基金
国家重点基础研究发展计划(2007CB411600)
国家自然科学基金资助项目(30730017)
关键词
岭鳅
条鳅亚科
爬鳅科
广西
Oreonectes
Ncmacheilinae
Balitoddac
Guangxi
