Title

Austinixa, a New Genus of Pinnotherid Crab (Crustacea: Decapoda: Brachyura), with the Description of A-hardyi, a New Species from Tobago, West Indies

Document Type

Article

Publication Date

10-10-1997

Department

Marine Science

Abstract

The new genus Austinixa is recognized for Pinnixa cristata Rathbun and six other species formerly assigned to Pinnixa White, 1846. An eighth species, A. hardyi, new species, is described from Tobago, West Indies. Members of Austinixa can be distinguished from species of Pinnixa sensu stricto by the transverse ridge that completely crosses the posterior surface of the carapace, the strongly deflected fingers of the chelae, and the much longer, slenderer, and smoother third walking leg. Members of Austinixa often are associated with callianassid shrimps. Austinixa hardyi, new species, found associated with a member of the callianassid genus Callichirus Stimpson, 1866, is the only described species of Austinixa having dense patches of setae on the carapace of the male.

Publication Title

Proceedings of the Biological Society of Washington

Volume

110

Issue

3

First Page

393

Last Page

398

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