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Zoological Research
Kunming Institute of Zoology, Chinese Academy of Sciences
ISSN: 2095-8137
Vol. 38, No. 5, 2017, pp. 291-299
Bioline Code: zr17038
Full paper language: English
Document type: Research Article
Document available free of charge

Zoological Research, Vol. 38, No. 5, 2017, pp. 291-299

 zh 中国云南怒江水系鰋属鱼类一新种
Chen, Xiao-Yong; J. Poly, William; Catania, David & Jiang, Wan-Sheng


最初于2003至2006年在中国云南省保山市高黎贡山怒江水系的两条溪流里采集到一种鰋属 Exostoma check for this species in other resources Blyth,1860鱼类新种,其后分别于2007年和2015年在云南省临沧市沧源县和永德县萨尔温江水系的两条支流里也采集到了标本。新种高黎贡鰋Exostoma gaoligongense sp.nov.是鰋属的第11个物种,形态上与分布于缅甸北部伊洛瓦底江水系的长须鰋 E.vinciguerrae check for this species in other resources 最为接近,但本新种可以籍以下特征与之相区别:腹鳍伸达肛门vs.不达;颌须后伸仅达或略超过胸鳍起点vs.超过胸鳍起点甚或伸达鳃盖膜后缘;躯椎22-25枚vs.25-27;背鳍长为背鳍起点与脂鳍起点间距的90.3%-287.0% vs.59.2-85.7。文中列出了鰋属鱼类的分种检索表。


鰋鮡亚科; 鮡科; 怒江; 高黎贡山; 云南

 
 en A new species of sisorid catfish of the genus Exostoma check for this species in other resources from the Salween drainage, Yunnan, China
Chen, Xiao-Yong; J. Poly, William; Catania, David & Jiang, Wan-Sheng

Abstract

A new species of the sisorid catfish genus Exostoma Blyth, 1860 was collected from two hill-stream tributaries of the Nujiang (Salween River) drainage in Gaoligong Mountain, south-western Yunnan Province, China from 2003 to 2006 and from two tributaries of the Salween River in Cangyuan County, Lingcang Prefecture, Yunnan Province, China (in 2007) and in Yongde County, Lingcang Prefecture, Yunnan Province, China (in 2015). Exostoma gaoligongense sp. nov. is the 10th species of the genus and is most similar to E. vinciguerrae in morphology but can be distinguished by pelvic fin reaching anus vs. not reaching; maxillary barbels just reaching or slightly surpassing pectoral-fin origin vs. surpassing pectoral-fin origin or even reaching posterior end of gill membrane; abdominal vertebrae 23-25 vs. 25-27; length of dorsal fin/dorsal to adipose distance 90.3%-287.0% vs. 59.2-85.7. A key to Exostoma spp. is provided.

Keywords
Glyptosterninae; Sisoridae; Nujiang; Gaoligong Mountain; Yunnan

 
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