title: A new species of Mymarothecium and new host and geographical records for M. viatorum (Monogenea: Dactylogyridae), parasites of freshwater fishes in Brazil.
abstract: Mymarothecium boegeri sp. n. (Monogenea: Dactylogyridae) is described from the gills of Colossoma macropomum Cuvier (Characidae), collected from the aquaria of the "Centro de Pesquisas em Aquicultura, Departamento Nacional de Obras Contra as Secas (DNOCS)", Pentecoste City, State of Ceará, Brazil. Mymarothecium viatorum Boeger, Piasecki et Sobecka, 2002 is reported from the type host, Piaractus brachypomus (Cuvier) (Characidae) and from a new host, P. mesopotamicus (Holmberg) (Characidae), confirming the occurrence of M. viatorum in the Neotropical Region. The new species differs from the congeneric species in the structure of male copulatory complex; it is more closely related to M. viatorum by the presence of a posteromedial projection on ventral bar.
authors.affiliation: Laboratório de Helmintos Parasitos de Peixes, Departamento de Helmintologia, Instituto Oswaldo Cruz, FIOCRUZ, Av. Brasil 4365, 21040-900, Rio de Janeiro, RJ, Brasil. scohen@ioc.fiocruz.br
authors.forename: Simone Chinicz
authors.initials: SC
authors.lastname: Cohen
authors.forename: Anna
authors.initials: A
authors.lastname: Kohn
mesh_terms: D000818:Animals; D049628:Body Size; D001938:Brazil; D005393:Fish Diseases / Q000469:parasitology*; D005399:Fishes; D005618:Fresh Water; D005880:Gills / Q000469:parasitology; D010986:Platyhelminths / Q000033:anatomy & histology / Q000145:classification* / Q000302:isolation & purification*; D014201:Trematode Infections / Q000469:parasitology / Q000662:veterinary*