Chewing lice (Insecta, Phthiraptera) of the burrowing parrot Cyanoliseus p. patagonus (Vieillot) from Argentina

In the course of ongoing studies of Burrowing Parrots Cyanoliseus p. patagonus in a breeding colony at ElCóndor, Río Negro, Argentina, we collected data on the prevalence of ectoparasitic chewing lice. Using a "Fair Isle" apparatus, we found only two species on chicks of he Burrowing Parrots, namely Heteromenopon macrurum (Eichler) (Amblycera, Menoponidae sensu lato) and Paragoniocotes meridionalis Guimarães (Ischnocera, Philopteridae sensu lato). For both species, we provide additional descriptions. Heteromenopon pilosum Cicchino & Castro, 1976 is shown to be a more recent synonym of H. macrurum. All seven revised chicks of Burrowing Parrots (age 21 - 39) days were infested wth Heteromenopon macrurum (3-14) specimens per host), while only five of seven chicks ad Paragoniocotes meridionalis (2-5 specimens)