Pindamoraria boraceiae, a new genus and species of freshwater Canthocamptidae (Copepoda, Harpacticoida) from Brazil

Members of a new genus and species of harpacticoid copepod crustacean appeared in samples from semi-terrestrial (moist arboreal mosses, wet soil) and aquatic (bromeliad tanks, Sphagnum moss, rock pools, stream) habitats in a remnant of the Atlantic Forest in south-eastern Brazil. The new taxon, for which we propose the name Pindamoraria boraceiae sp. nov., is distinguished by a unique combination of characters, in particular the segmentation and setation pattern of legs 1-4 in both sexes, the structure of leg 5 in the female, and the strongly modified claw of the maxilliped in the male. It most resembles the canthocamptid genera Moraria, Pseudomoraria, Morariopsis and Paramorariopsis. Both previous records of species of Moraria from South America refer to members of Antarctobiotus, which is not considered a member of the Moraria group: Moraria (Kuehneltiella) neotropica Loffler has previously been transferred to Antarctobiotus; and we propose herein the transfer of Moraria kummeroworum Ebert & Noodt to Antarctobiotus as well. In the New World, the genus Moraria extends only as far south as Honduras; and Pseudomoraria, Morariopsis and Paramorariopsis are Old World genera. The new species from Brazil is therefore the only member of the Moraria group known from South America. (C) 2003 The Linnean Society of London.