A new species of freshwater crab of the genus Nanhaipotamon Bott, 1968 (Crustacea, Decapoda, Brachyura, Potamidae) from Longhai, Fujian Province, China.

Mao-Rong Cai,Qi-Hong Tan,Jie-Xin Zou

doi:10.3897/zookeys.1062.71171

Abstract

A new species of freshwater crab of the genus Nanhaipotamon Bott, 1968 is described from Xiaye Village, Chengxiang Town, Longhai County, Zhangzhou City, Fujian Province, China. The new species is distinguished from congeners by the combination of characters of its carapace, third maxilliped, unequal chelipeds, triangular male abdomen and unique male first gonopod. Molecular evidence derived from partial mitochondrial 16S rRNA and COI genes also support the species as new.

Highlights

The genus Nanhaipotamon Bott, 1968 was originally established by Bott (1968), with several species from Taiwan, Philippines, and the Ryukyus (Japan). Dai (1997) revised the genus and described nine species from China
Other examined materials were deposited at the Center for Disease Control and Prevention of Zhangzhou City, Zhangzhou, China (ZZCDC) and the National Tropical Disease Research Center, Shanghai, China (TDRC)
External orbital angle triangular, separated from anterolateral margin by wide, concave notch; epibranchial teeth small, granular; anterolateral margin lined with conspicuous granules (Figs 1A, 3A)

Summary

Introduction

The genus Nanhaipotamon Bott, 1968 was originally established by Bott (1968), with several species from Taiwan, Philippines, and the Ryukyus (Japan). Dai (1997) revised the genus and described nine species from China. The genus Nanhaipotamon Bott, 1968 was originally established by Bott (1968), with several species from Taiwan, Philippines, and the Ryukyus (Japan). Dai (1997) revised the genus and described nine species from China. Prior to the present study, Nanhaipotamon contained 18 species (Dai 1999; Cheng et al 2003; Shih et al 2005; Cheng et al 2009; Huang et al 2012, 2018a; Lin et al 2012; Lin et al 2013)

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Conclusion