RHABDOCHONA (R.) URUYENI (NEMATODA, RHABDOCHONIDAE) EN BRASIL: PRESENTE SITUACIÓN DE RHABDOCHONA RAILLIET EN SUD-AMÉRICA, CON UN LEVANTAMIENTO BIBLIOGRÁFICO A NIVEL MUNDIAL DEL GÉNERO DESDE 1845 HASTA 2010

During studies of fish helminths, deposited in the Helminthological Collection of the Oswaldo Cruz Institute (CHIOC), some samples of nematodes were studied and identified as Rhabdochona uruyeni Diaz-Ungria, 1968. The present status of the species occurring in South America is discussed and updated. To facilitate further accesses, a worldwide bibliographical survey related to systematic, taxonomic, morphological, biological, cladistical and ecological approaches to the genus, covering a period of 165 years is presented. To date, Rhabdochona (Rhabdochona) acuminata is referred in Argentina, Brazil, and Ecuador, together with Rhabdochona (Filochona) fabianae in Argentina and Rhabdochona (Rhabdochona) uruyeni in Venezuela and now in Brazil, for the first time and in a new host. Also, Rhabdochona spp. are cited in Argentina, Brazil and Peru. Rhabdochona colossomi Diaz-Ungria, 1968 is considered a nomen nudum.