Atractus natans Hoogmoed and Prudente, 2003
Type locality. Near the confluence between Rio Apara and Rio Mamirauá, EstaÇão Ecológica de Mamirauá, MelgaÇo, state of Pará, Brazil .
Distribution. Known from Brazil and Peru in Amazonian forest (Plt. 171A). In Brazil, recorded in central and western Amazonia (Plt. 171A) at low elevations (Plt. 171B). Observed in the field in primary secondary forest (Dixon and Soini, 1986).