Four new records of Ephemerelloidea for São Paulo State, Leptohyphes cornutus Allen, Leptohyphes plaumanni Allen, Tricorythodes bullus Allen, and Traverhyphes (Traverhyphes) indicator (Needham & Murphy) are presented. The latter species constitutes a new record for Brazil. In addition of the new records, the distribution of the following species are expanded: Leptohyphodes inanis Ulmer, Traverhyphes (Mocoihyphes) edmundsi (Allen), and Traverhyphes (Mocoihyphes) yuati Molineri.
aquatic insects; Mayflies; Leptohyphidae; Melanemerellidae