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Issue: Vol. 5424 No. 5: 18 Mar. 2024
Type: Article
Published: 2024-03-18
DOI: 10.11646/zootaxa.5424.5.1
Page range: 501-519
Abstract views: 34
PDF downloaded: 4

First record of the genus Chinapotamon Dai & Naiyanetr, 1994 (Crustacea: Decapoda: Brachyura: Potamidae) from northern Vietnam with description of one new species

Institute of Ecology and Biological Resources; Vietnam Academy of Science and Technology; 18 Hoang Quoc Viet; Cau Giay; Ha Noi; Vietnam; Graduate University of Science and Technology; Vietnam Academy of Science and Technology; 18 Hoang Quoc Viet; Cau Giay; Ha Noi; Vietnam
Institute of Ecology and Biological Resources; Vietnam Academy of Science and Technology; 18 Hoang Quoc Viet; Cau Giay; Ha Noi; Vietnam
Institute of Ecology and Biological Resources; Vietnam Academy of Science and Technology; 18 Hoang Quoc Viet; Cau Giay; Ha Noi; Vietnam; Graduate University of Science and Technology; Vietnam Academy of Science and Technology; 18 Hoang Quoc Viet; Cau Giay; Ha Noi; Vietnam
Crustacea freshwater crab Chinapotamon depressum Chinapotamon pusillum taxonomy biodiversity

Abstract

Our recent surveys in North Vietnam found three species of the potamid genus Chinapotamon Dai & Naiyanetr, 1994. Two species may be identified as species described from Southern China, C. depressum (Dai, Song, Li & Liang, 1980) and C. pusillum (Song, 1984), and one species is new to science. The new species can be distinguished from other congeners by its smaller carapace size, more subquadrate carapace, strongly convex and rugose carapace dorsal, low epigastric and postorbital cristae, high epibranchial tooth, deep notch between epibranchial tooth and anterolateral margin, deep concavity between frontal margin lobes, stout last ambulatory merus, narrow telson, slender gonopod 1 terminal segment bent at about 10° inwards and a relatively short gonopod 2. It is the first record of this genus in Vietnam. The present study raises the total number of freshwater crab species belonging to Potamidae in Vietnam to 60.

 

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