Identification of the species of Gyropidae (Phthiraptera, Amblycera) parasitic on the Ctenomyidae (Mammalia, Rodentia) in the Buenos Aires Province, Argentina, on the basis of the external chorionic architecture of the eggs

Four species of Gyropidae that occur on species of Ctenomyidae in the Buenos Aires Province were identified on the basis of the external chorionic architecture of the eggs: Gyropus parvus parvus (Ewing, 1924), Phtheiropoios rionegrensis Cicchino & Castro, 1994, Phtheiropoios forficulatus (Neumann, 1912) and Phtheiropoios gracilipes (Ewing, 1924). The genera Gyropus Nitzsch, 1818 and Phtheiropoios Eichler, 1940 are also tentatively characterized on the basis of eggs features.