This paper deal with the eupelmid Anastatus coreophagus Ashmead, 1904, reared from eggs of Triatoma infestans (Klug) in Córdoba province (Argentine) and some species of Ooencyrtus reared from eggs of Heteroptera hemipterus. Ooencyrtus submetallicus (Howard, 1896) is noticed as new for the Argentine entomofauna.