Two new species of shell-inhabiting tanaidaceans (Crustacea, Peracarida, Tanaidacea, Pagurapseudidae, Pagurapseudinae) from the shallow sublittoral off Vanuatu

摘要

Recent Pacific collections included numerous specimens of gastropod-shell-inhabiting tanaidaceans of the subfamily Pagurapseudinae, from shallow watersoff Vanuatu (7 to 21 m depth). The two sympatric species present are new toscience, and are described herein. Pagurapseudes queirosi n. sp. is distinguishedfrom other species with identical antennular flagellum and uropod segmentationby having only two pairs of pleopods (the other species having at least threepairs), and a large dorsal plumose seta, arising from a distinct tubercle on themerus of pereopod 1, inter alia. Macrolabrum mansoris n. sp. has a characteristicrostrum morphology, and three segments in the main flagellum of the antennule(all other congeneric species having either two or four segments).