New Pudicinae (Trichostrongylina, Heligmosomoidea) coparasites of Proechimys longicaudatus (Caviomorpha) from bolivia. I - Description of Pudica ginsburgi n. sp and Heligmostrongylus chiarae n. sp.

Two new Pudicinae (Trichostrongylina, Heligmosomoidea, Heligmonellidae) cop arasites of Proechimys longicaudatus (Caviomorph rodent) from Bolivia are d escribed: Pudica ginsburgi n.sp. is differentiated from all the other speci es of the genus by the great length of the spicules and of the vestibule an d by a different ratio of the length of the spicules on the length of the b ody. Heligmostrongylus chiarae n.sp. has very developed rays 4, strongly di vergent from rays 5 as occurs in three other species, H. almeidai (Durette- Desset & Tcheprakoff, 1969), a parasite of Trichomys apereoides (= Cercomys cunicularius) from Brazil, H. squamastrongylus (Travassos, 1937), a parasi te of Proechimys oris from Brazil and H. proechimysi Durette-Desset, 1970, a parasite of Proechimys semispinosus from Columbia. The specimens from Bol ivia are differentiated from the three species by the division of the dorsa l ray (anterior half versus posterior half) and by a different ratio of the length of the spicules on the length of the body.