Moraniella bella sp. n. is added to the hitherto monotypic Afrotropical genus Moraniella. The new species from South Africa is described, illustrated and compared with M. calodendri. On the basis of the new species an emended diagnosis of Moraniella is provided. M. bella is associated with Protorhus longifolia (Anacardiaceae), a host family typical for the Rhinocolinae. The single available larva was parasitised by an unidentified chalcidoid wasp.