The identity of Sesarma Rotundata Hess, 1865, and description of a new species of arboreal crab of the genus Labuanium Serène& Soh, 1970, from Guam, Western Pacific (Crustacea: Decapoda: Brachyura: Sesarmidae)

Abstract

The identity of the arboreal western Pacifi c sesarmid crab, Labuanium rotundatum (Hess, 1865) is clarifi ed. A neotype from Tonga is selected to stabilise the taxonomy of the species, which is rediagnosed and fi gured. A new species from Guam, previously identifi ed with L. rotundatum, is diagnosed and compared with congeners. Labuanium navus, new species, differs from L. rotundatum and allied taxa by a combination of carapace, cheliped, male abdomen and gonopod characters. © National University of Singapore.