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中国科学报报道: http://news.sciencenet.cn/sbhtmlnews/2013/1/268765.shtm
原吸鳅属Protomyzon为小型爬鳅科Balitoridae鱼类。Hora(1932)以分布于婆罗洲的怀氏平鳅Homaloptera whiteheadi Vaillant 1894为模式种建立了原吸鳅属Protomyzon。此后,又有3种原吸鳅属鱼类在婆罗洲被发现并描述:Protomyzon borneensis, P. griswoldi和P. aphelocheilus。陈宜瑜(1980)描述了分布于中国广西的的原吸鳅属鱼类两新种:厚唇原吸鳅P. pachychilus和中华原吸鳅P. sinensis。长期以来都认为原吸鳅属鱼类共有以上6种。Kottelat(2004)在对比查看了婆罗洲的原吸鳅属鱼类和中华原吸鳅后认为:原吸鳅属鱼类仅分布于婆罗洲,中国大陆分布的原吸鳅种类代表了一新属;以中华原吸鳅为模式种建立的新属——近原吸鳅属Erromyzon,同时描述了采自越南东北部近原吸鳅属一新种——壮体近原吸鳅E. compactus。此后,Neely等(2007)描述了采自广西大瑶山地区的新种杨氏近原吸鳅Erromyzon yangi。
厚唇瑶山鳅Yaoshania pachychilus (Chen 1980)
为了进一步澄清厚唇原吸鳅的分类问题,本研究进一步赴广西采集相关鱼类标本。结果发现,厚唇原吸鳅以其独特的鳃孔和口唇结构明显区别于近原吸鳅属及爬鳅科其它属鱼类,该种代表了爬鳅科一新属。厚唇原吸鳅为中国特有,并被列入中国濒危动物红皮书和中国物种红色名录,且仅分布广西大瑶山地区,该新属取名瑶山鳅属Yaoshania。同时,描述了采自广西大瑶山地区的近原吸鳅一新种——美斑近原吸鳅E. kalotaenia。该研究结果发表在国际动物分类学杂志ZOOTAXA。
Yang Jian, Maurice Kottelat, Chen Xiaoyong, Yang Junxing. 2012. Yaoshania and Erromyzon kalotaenia, a new genus and a new species of balitorid loaches from Guangxi, China (Teleostei: Cypriniformes). Zootaxa. 3586: 173-186.
http://www.mapress.com/zootaxa/2012/f/zt03586p186.pdf
New name for Panda loach, Yaoshania pachychilus; and a new species of Erromyzon is described
Hora (1932) described the genus Protomyzon from Borneo, with P. whiteheadi (Vaillant, 1893) as type species. Later, three more species were described also from Borneo. Two further species of Protomyzon were described from China: P. sinensis Chen, 1980 and P. pachychilus Chen, 1980. Kottelat (2004) commented that Protomyzon species are restricted to Borneo and that the Chinese species belong to a distinct genus which named Erromyzon. There are three Erromyzon fishes: Erromyzon sinensis, E. compactus and E. yangi.
For better understanding panda loach, Yang et al. (2012) examined the types of “Protomyzon pachychilus” and E. sinensis, combined with new collections, to re-describe the panda loach as a new genus, Yaoshania, for it is only distributed in Dayaoshan Mountains, Guangxi, Southern China.
Yaoshania is distinguished from other genera of Balitoridae by its larger gill opening, a lip lamina at angle of mouth, and the rostral fold with four notches to accommodate rostral barbels. A new species of Erromyzon is also described in the same paper.
For more information, please see the paper: Yang Jian, Maurice Kottelat, Chen Xiaoyong, Yang Junxing. 2012. Yaoshania and Erromyzon kalotaenia, a new genus and a new species of balitorid loaches from Guangxi, China (Teleostei: Cypriniformes). Zootaxa. 3586: 173-186.
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