In the present paper new records of the superfamily Ephemerelloidea are presented from Brazil. Keys to the identification of adults and nymphs of all documented families, genera and species in the country are also presented. The genera included are: Amanahyphes Salles & Molineri (1 species), Coryphorus Peters (1 species), Leptohyphes Eaton (5 species), Leptohyphodes Ulmer (1 species), Macunahyphes Dias, Salles & Molineri (1 species), Melanemerella Ulmer (1 species), Traverhyphes Molineri (4 species), Tricorythodes Ulmer (6 species), and Tricorythopsis Traver (9 species).
Taxonomy; Pannota; Ephemerelloidea; Southeast region; Brazil
