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首页> 外文期刊>Ichthyological Exploration of Freshwaters >A review of the genus Laubuca in Sri Lanka, with description of three new species (Teleostei: Cyprinidae)
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A review of the genus Laubuca in Sri Lanka, with description of three new species (Teleostei: Cyprinidae)

机译：斯里兰卡劳布卡属的综述，并描述了三个新物种（Teleostei：鲤科）

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摘要

The species hitherto included in the genus Chela are shown to belong to two distinct genera, Chela (type species C. cachius) and Laubuca (type species L. laubuca). The Indian and Sri Lankan species of Laubuca (L. laubuca, L. fasdata, L. dadyburjori, L. lankensis and three new species, L. insularis, L. ruhuna and L. varuna) are distinguished from C. cachius, the type species of Chela (among other characters) by having 14 pre-caudal vertebrae (vs. 17 in C. cachius); 31-37+1-2 lateral-line scales (vs. 56-61 + 3-4); 7-11 scales in transverse line on body (vs. 17-19); and 14-20 branched anal-fin rays (vs. 21-23). Within Sri Lanka, the dry-zone species L. lankensis and L. insularis are distinguished from their wet-zone congeners L. varuna and L. ruhuna byhaving the skin over the dentary densely tuberculated (vs. tubercles minute, widely spaced). Laubuca lankensis is distinguished from L. insularis by its shorter pelvic fins (not reaching anal-fin origin, vs. reaching beyond base of third branched anal-fin ray in L. insularis); while L. ruhuna is distinguished from L. varuna by its deeper body (2.9-3.1 in SL, vs. 3.2-3.6 in L. varuna).
机译：迄今为止，包括在Chela属中的物种已显示出属于两个不同的属，Chela（C。cachius类型）和Laubuca（L。laubuca类型）。劳巴卡的印度和斯里兰卡物种（L. laubuca，L。fasdata，L。dadyburjori，L。lankensis和三个新物种L. insularis，L。ruhuna和L. varuna）与C. cachius区别开来。拥有14个尾鳍前椎骨（与C. cachius相比为17个）的Chela物种（以及其他特征）; 31-37 + 1-2侧线刻度（vs. 56-61 + 3-4）;身体横线上的比例为7-11（相对于17-19）;和14-20条分支的肛门鳍射线（第21-23条）。在斯里兰卡内部，干区物种L. lankensis和insularis与湿区同类物L. varuna和L. ruhuna的区别在于，它们的牙齿覆盖在结节密集的齿状牙齿上（相对于结节分钟，间隔较宽）。 Laubuca lankensis与Insularis的区别在于其较短的骨盆鳍（未达到肛门鳍的起源，而到达Insularis的第三分支肛鳍射线的基部之外）;而ruhuna L.与varuna的区别在于其更深的身体（SL中的2.9-3.1，而varuna的3.2-3.6）。

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