Revision of the Parasesarma plicatum (Latreille, 1803) species-group (crustacea: decapoda: brachyura: sesarmidae)

Abstract

The mangrove sesarmid crabs of the Parasesarma plicatum species-group are revised, and four distinct taxa are recognized: Parasesarma plicatum (Latreille, 1803), P. affine (De Haan, 1837), P. ungulatum (H. Milne Edwards, 1853), and P. dumacense (Rathbun, 1914). These four species are easily distinguished from congeners by the number of dactylar tubercles of the chelipeds, the shape of the male first gonopod and live coloration. Their distributions are also distinct, P. plicatum being found in the eastern Indian Ocean, P. affine in Japan, China, Taiwan, P. ungulatum throughout Southeast Asia, and P. dumacense in the Philippines. Copyright © 2010 Magnolia Press.