Peer Nasreen, Gouws Gavin, Lazo-Wasem Eric, Perissinotto Renzo, Miranda Nelson A F
DST/NRF Research Chair in Shallow Water Ecosystems, Nelson Mandela Metropolitan University, PO Box 77000, Port Elizabeth 6031, South Africa.
South African Institute for Aquatic Biodiversity (SAIAB), Private Bag 1015, Grahamstown, 6140, South Africa.
Zookeys. 2017 Feb 16(657):1-28. doi: 10.3897/zookeys.657.11623. eCollection 2017.
A new species of freshwater crab, , is described from the southern region of the KwaZulu-Natal Province, South Africa. most closely resembles which is re-described here, but can be distinguished by a suite of key morphological characters including carapace shape and width, slim pereopods, inflated propodi of the chelipeds, and the shape and terminal segment length:subterminal segment length ratio of the 1 gonopod. In a previous study (Gouws et al. 2015), a 9.2-11.8 % divergence was found in the mitochondrial COI and 16S genes of the clade, allowing for the delineation of a new species. Despite the clear molecular distinction between the two species, it is difficult to separate them based on individual morphological characters, as there is a great deal of overlap even among key features. The new species is found in slow-moving mountain streams and pools at high altitudes between Umhlanga and Mtamvuna, in KwaZulu-Natal.
一种新的淡水蟹物种，[物种名称未给出]，是从南非夸祖鲁 - 纳塔尔省南部地区发现并描述的。它与[另一物种名称未给出]最为相似，在此对后者进行重新描述，二者可通过一系列关键形态特征区分，包括头胸甲形状和宽度、细长的步足、螯足膨大的掌节以及第一触角的形状和末节长度与亚末节长度之比。在之前的一项研究（古韦斯等人，2015年）中，发现[该物种所属]分支的线粒体COI和16S基因存在9.2 - 11.8%的差异，这使得新物种得以界定。尽管这两个物种在分子层面有明显区别，但基于个体形态特征却难以将它们区分开来，因为即使是关键特征之间也存在大量重叠。新物种发现于夸祖鲁 - 纳塔尔省乌姆兰加和姆塔姆武纳之间高海拔地区水流缓慢的山间溪流和水潭中。
