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Type: Articles
Published: 2010-12-06
Page range: 25–51
Abstract views: 45
PDF downloaded: 2

Six new species of the genus Chevalia Walker, 1904 (Amphipoda, Corophiidea, Chevaliidae) from Brazilian waters, with a key to world species of the genus

Universidade Federal do Rio de Janeiro, Museu Nacional, Departamento de Invertebrados, Setor de Carcinologia. Quinta da Boa Vista, s/n, São Cristóvão, Rio de Janeiro, RJ, CEP 20940-040, Brazil
Universidade Presbiteriana Mackenzie, São Paulo, Brazil
Universidade Presbiteriana Mackenzie, São Paulo, Brazil
Crustacea new species taxonomy hermaphrodite Chevaliidae Peracarida


Six new species of the genus Chevalia are described from the Brazilian coast using all morphological characters proposed by Barnard & Thomas (1987) and Lazo-Wazen (1999) with two more: the shape of head proximal margin of lateral cephalic lobe and length ratio of uropod 2 rami: C. anomala sp. nov.; C. caetes sp. nov.; C. convexa sp. nov.; C. marajoara sp. nov.; C. thomasi sp. nov.; and C. setosa sp. nov. This paper raises the total number of recognized world species in this genus to 13. The genus is herein subdivided into three groups, based only on the shape of the basis of pereopod 7: group I – rectangular basis of pereopod 7 with a protuberant posteroventral corner, comprises four species; group II – rectangular basis of pereopod 7 lacking a protuberant posteroventral corner, comprises three species; and group III – ovate basis of pereopod 7, comprises seven species. A key of the world Chevalia species is also provided.


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