Prosthenhystera gattiin. sp. (Digenea: Callodistomidae), a gallbladder parasite ofBryconamericus ikaafrom the lower Iguazú River, described based on combined molecular and morphological evidence

Adult forms of members of the Callodistomidae always parasitize the gallbladder of freshwater fishes and occur in Africa and America. This study provides a description of a new South American species belonging in Prosthenhystera from the gallbladder of a characid fish ( Bryconamericus ikaa ), and ribosomal gene sequences (28S rDNA and ITS1-5.8S-ITS2) are used to demonstrate molecular differences between the new species and congeners as well as...