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A new species of karst-dwelling freshwater crab of the genus Chinapotamon Dai & Naiyanetr, 1994 (Crustacea: Decapoda: Brachyura: Potamidae), from Guizhou, southwest China.

ABSTRACT: Chinapotamon maolanense sp. n. from Maolan National Nature Reserve, Guizhou, southwest China, is described. C. maolanense sp. n. has diagnostic features of Chinapotamon, such as a slender and sinuous male first gonopod, prominently convex carapace, and one-third ratio of frons to carapace width. This new species can be distinguished from congeners by the combination of the following characters: relatively slender subterminal segment of the first gonopods, nearly oval-shaped carapace, anterolateral margin cristate of carapace and an oval-shaped gap between the fingers of the male major chela. In addition, we used a 16S rRNA gene fragment to explore the relationship between C. maolanense sp. n. and C. glabrum, C. depressum and other freshwater crabs distributed in Guizhou; the results support the new species being assigned to Chinapotamon and clearly different from other species used in the analysis.

SUBMITTER: Zou JX 

PROVIDER: S-EPMC6252246 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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A new species of karst-dwelling freshwater crab of the genus <i>Chinapotamon</i> Dai & Naiyanetr, 1994 (Crustacea: Decapoda: Brachyura: Potamidae), from Guizhou, southwest China.

Zou Jie-Xin JX   Bai Jun J   Zhou Xian-Min XM  

PeerJ 20181122

<i>Chinapotamon maolanense</i> sp. n. from Maolan National Nature Reserve, Guizhou, southwest China, is described. <i>C. maolanense</i> sp. n. has diagnostic features of <i>Chinapotamon</i>, such as a slender and sinuous male first gonopod, prominently convex carapace, and one-third ratio of frons to carapace width. This new species can be distinguished from congeners by the combination of the following characters: relatively slender subterminal segment of the first gonopods, nearly oval-shaped  ...[more]

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