Abstract. Rileya hegeli Girault, 1916 (Hymenoptera, Eurytomidae) was previously known in USA, Mexico, Guatemala, Costa Rica, Dominican Republic, Jamaica, Venezuela and, in Brazil, in the states of Minas Gerais and Rio Grande do Sul. Here, we newly report this species from the Brazilian municipalities of Alto Paraíso de Goiás, in Goiás state, Brazil, obtained through collections with Malaise traps, of Ribeirão Preto and Águas de São Pedro, in São Paulo state, reared from leaf galls of Eugeniamyia dispar Maia, Mendonça & Romanowski, 1996 (Diptera, Cecidomyiidae) on Eugenia uniflora L. (Myrtaceae) and of Palhoça, in Santa Catarina state, reared from galls of an unidentified Cecidomyiidae gall-maker in fruits of E. uniflora. Additionally, we provide a map with the geographical distribution of the studied species based on the new records and literature.