Tribe Onocephalini

The tribe Onocephalini contains 18 species described in three genera, Onocephala Sturm, 1843 with nine species, Pseudoperma Dillon & Dillon, 1946 with two species, and Stethoperma Lameere, 1884 with seven species. All the species occur exclusively in Brazil, except Stethoperma obliquepicta Breuning, 1940 which occurs in Brazil and Paraguay (Monné, 2016).