Description of a new freshwater crab of the genus Sesarma Say, 1817 (Brachyura, Grapsidae, Sesarminae) from western Jamaica
Reimer, J.; Schubart, C.D.; Diesel, R.
Crustaceana (Leiden) 71(2): 185-196
ISSN/ISBN: 0011-216X DOI: 10.2307/20105973
A new freshwater crab, Sesarma dolphinum sp. n., is described from Jamaica. The number of known Jamaican endemic Sesarminae increases thereby to eight. Half of the American species of Sesarma known at present are endemic to Jamaica. The new species is locally restricted to the slopes of the Dolphin Head Mountain in western Jamaica. It probably evolved when sea-level fluctuations during the Pliocene isolated this mountain from Central Jamaica. Sesarma dolphinum is closely related to Sesarma fossarum Schubart, Reimer, Diesel & Turkay, 1997, but differs in the morphology of the chelipeds, in the degree of pubescence, and in morphometric relationships.