title: Taxonomic revision of Tatria Kowalewski, 1904 (Cestoda: Amabiliidae): redescriptions of T. biremis Kowalewski, 1904 and T. minor Kowalewski, 1904, and the description of T. gulyaevi n. sp. from Palaearctic grebes.
abstract: Two species of Tatria Kowalewski, 1904 are redescribed from grebes in Bulgaria: T. biremis Kowalewski, 1904 (specimens from Podiceps nigricollis) and T. minor Kowalewski, 1904 (specimens from P. cristatus and P. nigricollis). T. mircia Gulyaev, 1990 is synonymised with T. minor. The previous records of T. biremis, T. minor and T. mircia are critically analysed in view of the present results. T. gulyaevi n. sp. is described from P. nigricollis from Bulgaria and the Czech Republic and from an unidentified grebe species from Turkey. Some of the previous records of T. minor and T. biremis are recognised as belonging to T. gulyaevi. One specimen illustrated by Kowalewski (1904) is designated as a lectotype of T. minor in order to stabilise the nomenclatural standing of this species.
authors.affiliation: Parasitic Worms Division, Department of Zoology, The Natural History Museum, Cromwell Road, London SW7 5BD, UK.
authors.forename: Gergana P
authors.initials: GP
authors.lastname: Vasileva
authors.forename: David I
authors.initials: DI
authors.lastname: Gibson
authors.forename: Rodney A
authors.initials: RA
authors.lastname: Bray
mesh_terms: D000818:Animals; D001717:Birds / Q000469:parasitology*; D002589:Cestoda / Q000033:anatomy & histology* / Q000145:classification*; D010802:Phylogeny; D013045:Species Specificity