title: Redescriptions of two echinostomes from freshwater fishes, with comments on Singhia Yamaguti, 1958 and Caballerotrema Prudhoe, 1960 (Digenea: Echinostomatidae).
abstract: The type-species of Singhia and Caballerotrema (Digenea: Echinostomatidae), parasites of freshwater fishes which have previously been assigned to the subfamily Singhiinae Yamaguti, 1958, are redescribed. One of the specimens of the type-series of Caballerotrema brasiliense Prudhoe, 1960 was identified as C. aruanense Thatcher, 1980. C. arapaimense Thatcher, 1980 is considered a species inquirenda. Himasthla piscicola Stunkard, 1960 is transferred to Caballerotrema as C. piscicola n. comb. The generic diagnoses of Singhia and Caballerotrema are redefined and Singhia is re-allocated to the Echinostomatinae Looss, 1899, the Singhiinae becoming a synonym of the latter.
authors.affiliation: Department of Biodiversity, Central Laboratory of General Ecology, Bulgarian Academy of Sciences, 2 Gagarin Street, 1113 Sofia, Bulgaria.
authors.forename: A
authors.initials: A
authors.lastname: Kostadinova
authors.forename: D I
authors.initials: DI
authors.lastname: Gibson
mesh_terms: D000818:Animals; D004450:Echinostomatidae / Q000033:anatomy & histology / Q000145:classification*; D005393:Fish Diseases / Q000469:parasitology*; D005399:Fishes / Q000469:parasitology*; D005618:Fresh Water; D014201:Trematode Infections / Q000469:parasitology / Q000662:veterinary*