Atractus riveroi Roze, 1961

Type locality. Cerro Duida, Amazonas, Venezuela .

Distribution. Known from Brazil and Venezuela on the Guiana Shield (Plt. 177A). In Brazil, restricted to the Guianan savanna (Plt. 177A) at intermediate to high elevations (Plt. 177B). Observed in the field in open areas and evergreen forest (Passos et al., 2013).