The freshwater crab genus Lacunipotamon Dai, Song, He, Cao, Xu & Zhong, 1975 (Decapoda, Brachyura, Potamidae), with descriptions of two new species from southwestern China

In: Crustaceana
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  • 1 University of New South Wales, Kensington, NSW 2052, Australia
  • 2 Australian Museum, 1 William St, Sydney NSW 2010, Australia
  • 3 School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China
  • 4 Department of Life Science and Research Center for Global Change Biology, National Chung Hsing University, 250, Kuo Kuang Road, Taichung 402, Taiwan, Republic of China

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Abstract

The poorly known genus Lacunipotamon Dai, Song, He, Cao, Xu & Zhong, 1975, is studied and reviewed. Two new species, Lacunipotamon yuanshi sp. nov. and Lacunipotamon cymatile sp. nov. from Yunnan Province and Guangxi Zhuang Autonomous Region, respectively, are described based on morphology and mitochondrial cytochrome c oxidase subunit I (COI) sequences. Both superficially resemble Lacunipotamon albusorbitum Dai, Song, He, Cao, Xu & Zhong, 1975, the type and previously only known species in the genus, but can be distinguished by the combination of live colour, size, maxilliped III, male thoracic sternum, male pleon, male gonopod, and female gonopore characters. Phylogenetic analysis of the molecular data corroborates the novelty of the two species.

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