Stephomyia rotundifoliorum, sp.n., S. tetralobae, sp.n., S. espiralis, sp.n. and S. mina, sp.n. from Rio de Janeiro State are described. A brief diagnosis of the genus and two keys are presented - one to larvae of the known species and one for available males. The new species are recorded from various species of Eugenia L. and Neomithrantes obscura (DC) Legr. (Myrtaceae).
Diptera; Cecidomyiidae; Stephomyia; Myrtaceae; Rio de Janeiro; Brazil