Ten species of Trichogramma (T. acacioi Brun, Moraes & Soares, T. atopovirilia Oatman & Platner, T. exiguum Pinto & Platner, T. fuentesi Torre, T. galloi Zucchi, T. lasallei Pinto, T. lopezandinensis Sarmiento, T. nerudai Pintureau & Gerding, T. pintoi Voegelé e T. rojasi Nagaraja & Nagarkatti) were studied based on male morphology. A scanning electronic microscope was used to illustrate the most important characters. New host records are T. acacioi from Hamadryas feronia (L.) eggs (Brazil), T. nerudai from Tuta absoluta Meyrick eggs (Chile) and T. lasallei from Diatraea saccharalis (Fabricius) eggs (Uruguay, first record in this country).
Chalcidoidea; taxonomy; morphology; egg parasitoid
