Four new species of Trichogramma are described: Trichogramma bertii n. sp. from Glena sp., a geometrid of silvicultural importance; Trichogramma esalqueanum n. sp. from Mechanitis lysimnia eggs, a minor pest of tomato and Heliconius erato phyllis; Trichogramma iracildae n. sp. from eggs of Calpodes ethlius; and Trichogramma pratissolii n. sp. collected from Anagasta kuehniella trap eggs (factitious host).

An electrical suction trap set in a forest reserve in the State of São Paulo, Brazil, was used to collect Trichogramma species. Six new species were collected, namely Trichogramma acuminatum n. sp., Trichogramma alloeovirilia n. sp., Trichogramma parrai n. sp., Trichogramma pusillum n. sp., Trichogramma tupiense n. sp. and Trichogramma zucchii n. sp., which are being described herein.

Cardboards with Anagasta kuehniella (Zeller) (Lepidoptera: Pyralidae) eggs were fastened to eucalyptus plants in the Municipality of Paraopeba, State of Minas Gerais, Brazil aiming to collect egg parasitoids that naturally occur in this area. All individuals of egg parasitoids collected were identified as Trichogramma pratissolii Querino and Zucchi (Hymenoptera: Trichogrammatidae) and it represents the first report of this species in the Minas Gerais State and also in Eucalyptus plantations in Brazil.