A new genus of Galatheidae (Crustacea, Anomura) from the Western Pacific Ocean.

Abstract

[EN]A new genus, Crosnierita, is established for three species of galatheid crustaceans: C. dicata n.sp., Munida urizae Macpherson, 1994 and M. yante Macpherson, 1994, the latter two having been transferred to the genus Agononida. The new genus is characterized by the absence of male pleopods on the first abdominal segment, the frontal margin deeply concave, the lateral margin of the basal antennular segment bearing two spines in addition to the distal spines, the third and fourth segments of the antennal peduncle reduced in size and the merus of the third maxilliped very short. All these characters suggest that the new genus approaches Bathymunida Balss, 1914 and its relatives.

[FR]Un nouveau genre de Galatheidae (Crustacea, Anomura) de I'ocean Pacifique occidental. Le nouveau genre Crosnierita est etabli pour trois especes de crustaces galatheides : C. dicata n.sp., Munida urizae Macpherson, 1994 et M. yante Macpherson, 1994, ces deux dernieres especes ayant ete precedemment placees dans le genre Agononida. Le nouveau genre est caracterise par : I'absence de pleopodes sur le premier segment abdominal des males ; le bord rostral profondement concave ; le bord lateral du segment basal des antennules portant deux epines en plus des epines distales ; les troisieme et quatrieme segments du pedoncule antennaire de taille reduite et avec le merits du troisieme maxillipede tres reduit. Cet ensemble de caracteres suggere que ce nouveau genre est proche de Bathymunida Balss, 1914.