title: Two new species of Nippostrongylinae (Nematoda: Trichostrongylina: Heligmonellidae) from the grey leaf-eared mouse Graomys griseoflavus (Sigmodontinae) in Argentina.
abstract: Two new species of Nippostrongylinae, Hassalstrongylus puntanus n. sp., and Stilestrongylus franciscanus n. sp. are described from the intestine of the grey leaf-eared mouse Graomys griseoflavus (Waterhouse, 1837) (Sigmodontinae) from the Province of San Luis, Argentina. Hassalstrongylus puntanus n. sp. is distinguished from the most closely related species H. dollfusi (Díaz-Ungría, 1963), a parasite of Mus musculus from Venezuela by longer rays 2, shorter rays 4, proximal half of the dorsal ray non-enlarged and a non-retractile female tail. Stilestrongylus franciscanus n. sp. is distinguished from the most closely related species S. flavescens Sutton & Durette-Desset, 1991, a parasite of Oryzomys flavescens from Argentina, by rays 2 and 3 diverging separately from common trunk of rays 2 to 6, and by right ray 3 arising from this trunk more distally than ray 6. Stilestrongylus azarai Durette-Desset & Sutton, 1985, a parasite of Akodon azarae from Buenos Aires, Argentina, was also found parasitizing G. griseoflavus, representing new host and locality records. Some additional morphological data for this species are also provided.
authors.affiliation: Laboratoire de Biologie Parasitaire, Protistologie et Helminthologie, et CNRS FR63, Muséum National d'Histoire Naturelle, 61, rue de Buffon, 75231 Paris, France.
authors.forename: M C
authors.initials: MC
authors.lastname: Digiani
authors.forename: M C
authors.initials: MC
authors.lastname: Durette-Desset
mesh_terms: D000818:Animals; D001118:Argentina; D005260:Female; D008297:Male; D051379:Mice; D009115:Muridae / Q000469:parasitology*; D010802:Phylogeny; D012376:Rodent Diseases / Q000469:parasitology*; D014251:Trichostrongyloidea / Q000033:anatomy & histology / Q000145:classification*; D014252:Trichostrongyloidiasis / Q000469:parasitology / Q000662:veterinary*