Digeneans and acanthocephalans of birds from Formosa Province, Argentina

The aim of this paper is to increase the knowledge on the diversity of digenean parasites from birds collected in northeastern Argentina. The helminthological survey of four bird species revealed the presence of five digenean species and one acanthocephalan species. The digeneans, Lyperorchis lyperorchis Travassos, 1921 and Edietziana serrata (Diesing, 1850) from Aramus guarauna (L.); Nephrostomum limai Travassos, 1922 from Syrigma sibilatrix (Temminck); Athesmia heterolecithodes (Braun, 1899) from Theristicus caudatus (Boddaert) and Cariama cristata (L.); Stomylotrema vicarium Braun, 1901 from T. caudatus, and the acanthocephala Centrorhynchus guira Lunaschi & Drago, 2010 from T. caudatus, were recorded. Lyperorchis inexpectabilis Digiani, 1997 is synonimized with L. lyperorchis. The findings of E. serrata and N. limai constitute new geographical records. Theristicus caudatus is reported as a new definitive host of A. heterolecithodes, S. vicarium and C. guira, and Cariama cristata of A. heterolecithodes. The relationships between host diet and parasite fauna are discussed.