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.

A new species of freshwater crab of the genus Mediapotamon Türkay & Dai, 1997 (Crustacea, Decapoda, Brachyura, Potamidae) from Guizhou, China

“…Before our study, only three new species, namely Diyutamon cereum , Qianguimon elongatum , and Chinapotamon maolanense , collected in Guizhou had been published in the past 20 years (Huang et al 2017, Huang 2018, Zou et al 2018), implying that the freshwater crabs in this area still have high taxonomic research value. With the new species presently described, there are now 31 species of 13 potamid genera in Guizhou (Shih and Ng 2011).…”

Two new species of freshwater crab of the genus Aparapotamon Dai & Chen, 1985 (Crustacea, Brachyura, Potamidae) from Yunnan, China

“…2018a ). Despite this substantial diversity, the rate of discovery remains high ( Chu et al 2018b ; Huang et al 2018a , b , 2020a , b ; Naruse et al 2018 ; Zou et al 2018 ; Gao et al 2019 ; Wang et al 2019a , b , 2020a , b ; Mao and Huang 2020 ). With the two new species described in this study, Yunnan has a total of 18 genera and 67 species, highest among all provinces in China ( Chu et al 2018a ; Wang et al 2020 ).…”

Supplementary material 1 from: Tan Q-H, Zhou X-J, Zou J-X (2021) Two new species of freshwater crab of the genus Aparapotamon Dai & Chen, 1985 (Crustacea, Brachyura, Potamidae) from Yunnan, China. ZooKeys 1056: 149-171. https://doi.org/10.3897/zookeys.1056.63755

“…2018a). Despite this substantial diversity, the rate of discovery remains high (Chu et al 2018b;Huang et al 2018aHuang et al , b, 2020aNaruse et al 2018;Zou et al 2018;Gao et al 2019;Wang et al 2019aWang et al , b, 2020aMao and Huang 2020). With the two new species described in this study, Yunnan has a total of 18 genera and 67 species, highest among all provinces in China (Chu et al 2018a;Wang et al 2020).…”