title: A new species of nematode (Molineidae) from Rhinella marina (Amphibia: Bufonidae) in Guerrero, México.
abstract: Oswaldocruzia lamotheargumedoi n. sp., inhabiting the intestine of the cane toad, Rhinella marina (L.), in Laguna de Coyuca, Guerrero, México, is described here. The new species differs from 10 congeners infecting bufonid hosts because it has a type I bursa. In contrast, 7 of these species have type II bursa and 3 more a type III bursa. The species most similar to the species described herein is Oswaldocruzia pipiens Walton, 1929 . These 2 species share traits such as body size, bursa type, presence of cervical alae, and dorsal ray morphology. Nevertheless, both species can be distinguished based on the number of synlophe ridges at mid-body (54-56 for O. lamotheargumedoi vs. 45-48 for O. pipiens) and by the presence of a chitinous support in the long, and well developed, cervical alae of O. pipiens. In the new species, these structures are short, poorly developed, and lack chitinous support. Previous records of species of Oswaldocruzia in México include Oswaldocruzia subauricularis (Rudolphi, 1819) Travassos, 1917 in the Neotropical Realm and O. pipiens in the Nearctic.
authors.affiliation: Laboratorio de Helmintología, Instituto de Biología, Universidad Nacional Autónoma de México, Apartado Postal 70-153, CP 04510 México, DF, México.
authors.forename: Nallely
authors.initials: N
authors.lastname: Ruiz-Torres
authors.forename: Luis
authors.initials: L
authors.lastname: García-Prieto
authors.forename: David
authors.initials: D
authors.lastname: Osorio-Sarabia
authors.forename: Juan
authors.initials: J
authors.lastname: Violante-González
mesh_terms: D000818:Animals; D002025:Bufonidae / Q000469:parasitology*; D005260:Female; D007411:Intestinal Diseases, Parasitic / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary; D007422:Intestines / Q000469:parasitology; D008297:Male; D008800:Mexico / Q000453:epidemiology; D057807:Molineoidae / Q000033:anatomy & histology / Q000145:classification* / Q000648:ultrastructure; D015995:Prevalence; D012727:Sex Characteristics; D017206:Strongylida Infections / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary*