Three new species of the genus Munida Leach, 1820 (Decapoda, Galatheidae) from Seychelles Islands (Indian Ocean)

Abstract

[EN]Three new species of the genus Munida Leach, 1820 (M. insularis, M. dissita and M. nesiotes) are described and illusttated from specimens collected during the cruise Cepros carried out off Seychelles Islands. M. insularis closely resembles M. eclepsis Macpherson, 1994 from New Caledonia. The new species is characterized by the presence of five spines on the lateral margins of the carapace behind cervical groove, the second abdominal segment armed with spines along the anterior ridge, the distolateral spine of the basal antennular segment longer than the distomesial and the dactylus of the walking legs short, with movable spinules along the entire ventral border. M. dissita is closely related to M. remota Baba, 1989, from Madagascar, M. rubiest Macpherson, 1991, from the Gulf of Aden and M. africana Doflein & Balss, 1913, from Somalia. M. dissita has five spines on the lateral margins of the carapace behind cervical groove, the second abdominal segment armed with spines along the anterior ridge, the distolateral spine of the basal antennulat segment longer than the distomesial and the dactylus of the walking legs long and slender, with movable spinules along the proximal ventral border. M. nesiotes is close to M. erato Macpherson, 1994, from New Caledonia and Chesterfield Islands and belongs to the group of species having four spines on the lateral margins of the carapace behind cervical groove.

[FR]Trois nouvelles especes du genre Munida Leach, 1820 (Decapoda, Galatheidae) des iles Seychelles (ocean Indien). Trois nouvelles especes du genre Munida Leach, 1820 (M. insularis, M. dissita et M. nesiotes) sont decrites et illustrees a partir de specimens recoltes lors de la campagne Cepros au large des iles Seychelles. M. insularis est proche de M. eclepsis Macpherson, 1994, de Nouvelle-Caledonie. La nouvelle espece est caracterisee par la presence de cinq epines sur les bords lateraux de la carapace en arriere du sillon cervical, le deuxieme segment abdominal portant des epines le long de la crete anterieure, l'epine distolaterale du segment antennulaire basal plus longue que la distomesiale et le dactylus des pattes ambulatoires court, avec des spinules mobiles tout le long du bord ventral. M. dissita est proche de M. remota Baba, 1989, de Madagascar, de M. rubiest Macpherson, 1991, du golfe d'Aden et de M. africana Doflein & Balss, 1913, de Somalie. M. dissita a cinq epines sur les bords lateraux de la carapace en arriere du sillon cervical, le second segment abdominal portant des epines le long de la crete anterieure, l'epine distolaterale du segment antennulaire basal plus longue que la distomesiale et le dactylus des pattes ambulatoires long et fin, avec des spinules mobiles le long du bord ventral proximal. M. nesiotes est proche de M. erato Macpherson, 1994, de Nouvelle-Caledonie et des iles Chesterfield et appartient au groupe d'especes ayant quatre epines aux bords lateraux de la carapace en arriere du sillon cervical.