A new species of Cosmocercoides (Nematoda; Cosmocercidae) and other helminths in Leptodactylus latrans (Anura; Leptodactylidae) from Argentina.

Cosmocercoides latrans n. sp. (Cosmocercidae) from the small intestine of Leptodactylus latrans (Anura: Leptodactylidae) from Northeastern Province of Buenos Aires, Argentina is described. The new species can be distinguished from their congeners by a combination of the characters, among which stands out the number of rosette papillae, the lack of gubernaculum and the presence of lateral alae in both sexes. There are over 20 species in the genus Cosmocercoides, and Cosmocercoides latrans n. sp. represents the third species from the Neotropical realm and the second for Argentina. Additionally, seven previously known taxa are reported; Pseudoacanthocephalus cf. lutzi, Catadiscus uruguayensis, Rauschiella palmipedis, Aplectana hylambatis, Cosmocerca parva, Schrankiana sp. and Rhabdias elegans; providing literature records and information on distribution and host-parasite relationships.

Digenean fauna in raptors from northeastern Argentina, with the description of a new species of Strigea (Digenea: Strigeidae).

The digenean fauna of six species of falconiform birds from northeastern Argentina is reported and a new species and several new hosts and geographical records are presented. Strigea proteolytica n. sp. (Strigeidae) is described from Buteogallus urubitinga and distinguished from their congeners by the combination of the following characters: plump body, conspicuous proteolytic gland, forebody with scarce vitelline glands, copulatory bursa with a well developed muscular ring (Ringnapf), and absence of true neck region in hindbody. Six previously known species are breifly described: Strigea falconis brasiliana Szidat, 1929 (Strigeidae) from Milvago chimachima and Caracara plancus; Neodiplostomum travassosi Dubois, 1937 from Buteogallus meridionalis; Tylodelphys brevis Drago & Lunaschi, 2008 and Posthodiplostomum macrocotyle Dubois, 1937 (Diplostomidae) from Busarellus nigricollis; Spaniometra variolaris (Fuhrmann, 1904) (Cyclocoelidae) and Megalophallus deblocki Kostadinova, Vaucher & Gibson, 2006 (Microphallidae) from Rostrhamus sociabilis. Literature records and information on distribution and host-parasite relationships is presented.