This species occurs in the Pacific lowlands and on the western slopes of the Andes from the Department of Nariño in extreme southern Colombia, south to Manta Real in western Ecuador. A record from the Valle del Cauca in Colombia (Kattan, 1984) refers to Eleutherodactylus palmeri (Lynch and Duellman, 1997). Its altitudinal range is from 200-2,000m asl.
Habitat and Ecology
It is a species of lowland tropical rainforest and montane cloud forest. It occurs in primary and secondary habitats, but not in open areas. It is nocturnal, and is found at night on shrub-like vegetation up to 2m above the ground, and during the day in bromeliads axils. It is presumed to breed by direct development, but the egg deposition site is not known.
It is an uncommon species.
The major threats are likely to be deforestation for agricultural development, plantations, illegal crops, logging, and human settlement, and pollution resulting from the spraying of illegal crops.
It occurs in the La Planada private nature reserve in Colombia. In Ecuador, its geographic range overlaps with the Reserva Ecológica Cotacachi-Cayapas, Reserva Ecológica Los Illinizas, and Parque Nacional Mache-Chindul.
Fernando Castro, Diego Cisneros-Heredia 2004. Pristimantis parvillus. In: IUCN 2014