The subfamily Andaniopsinae (Crustacea: Amphipoda: Stegocephalidae): description of one new species and redescription of Steleuthera maremboca

One new species, Andaniopsis isaki n. sp., is described, and one species, Steleuthera maremboca, is redescribed. Both genera belong to the newly erected subfamily Andaniopsinae. The combination of the enlarged merus on pereopod 7 and the weakly incised apex of the telson separates the new species from all other Andaniopsinae species.