A new genus – Couridiplosis, and six new species of gall inducers – Asphondylia serrata, Couridiplosis vena, Lopesia bilobata, Lopesia spinosa, Lopesia tibouchinae and Myrciariamyia fernandesi, are herein described based on material from rupestrian fields and cerrado of Serra de São José (Minas Gerais State, Brazil). Illustrations of larvae, pupae, males and females are given.