摘要:A total of 27 Long-tailed Meadowlarks Sturnella loyca (Molina, 1782) from the Biobío Region wereexamined between January 2005 and December 2008. Birds were infected with chewing lice (Phthiraptera), feathermites (Acari), and helminths (Platyhelminthes, Acanthocephala). Three species of chewing lice were found: Brueeliaboae Cicchino and Castro, 1996 (26% prevalence), Menacanthus leistidis Cicchino, 1984 (7.4%), and Menacanthussturnellae Price, 1977 (7.4%). Mites included 4 taxa: Amerodectes sp. (Mironov, 2008) (14.8%), Harphyrhynchoidessp. (Fain, 1972) (7.4%), Mesalgoides sp. (Fain, 1972) (3.7%), and Proctophyllodes sp. (Robin, Mégnin, 1877)(3.7%). Gastrointestinal helminths included the cestode Anonchotaenia longiovata (Fuhrmann, 1901) (18%) and theacanthocephalan Mediorhynchus robustus (Van Cleave, 1916) (3.7%). With the exception of B. boae and M. leistidis,all parasites represent new records for this passerine bird species.