title: A new species of Halipegus Looss, 1899 (Trematoda: Derogenidae) parasitic in Rana psilonota Webb, 2001 of Atenquique, Jalisco, Mexico.
abstract: During an inventory of parasites of anurans in Occidental Mexico, an apparently undescribed species of Halipegus was found under the tongue of Rana psilonota Webb, 2001. The objective of this study is to describe this new species. Halipegus psilonotae differs from all other congeners by the combination of the following characters: parasite under the tongue of frogs, body size small, ventral sucker representing 0.19-0.2 of body length, ovary smaller than testes, egg filament short (27.5-40).
authors.affiliation: Estación de Biología Chamela, Instituto de Biología, Universidad Nacional Autónoma de México, AP 21, San Patricio, Jalisco, Mexico, CP 48980.
authors.forename: Virginia
authors.initials: V
authors.lastname: León-Règagnon
authors.forename: Angeles R
authors.initials: AR
authors.lastname: Romero-Mayén
mesh_terms: D000818:Animals; D008800:Mexico; D011898:Ranidae / Q000469:parasitology*; D045483:Rivers; D014059:Tongue / Q000469:parasitology; D014200:Trematoda / Q000033:anatomy & histology / Q000145:classification*; D014201:Trematode Infections / Q000469:parasitology / Q000662:veterinary*