Atractus collaris Peracca, 1897

Type locality. Río Cononaco, Province of Pastaza, Ecuador .

Distribution. Known from Brazil, Colombia, Ecuador, and Peru, in western Amazonia (Plt. 158A). In Brazil, known only from two localities in Amazonia (Plt. 158A), at low elevations (Plt. 158B). No detailed field data on habitat use are available for this species.