This species is known from the western slope of the Cordillera Occidental from the department of Cauca northwards to the department of Antioquia, and including Risaralda, Choco and Valle del Cauca departments, in Colombia, from 1,580-2,600m asl.
Habitat and Ecology
A nocturnal species, it occurs on top of low vegetation near streams in forest. It breeds by direct development and has not been recorded outside forest.
It is usually an uncommon species, but it is a microhabitat specialist making it difficult to find. At a locality near Quernal, in Valle del Cauca, a large series was collected when collectors adapted their techniques and began searching in low trees along steep banks.
Habitat loss caused by agricultural development (livestock and illegal crops) is the main threat to this species.
The range of the species includes several protected areas, including Parque Nacional Natural Tatamá and Parque Nacional de Las Orquídeas.
Fernando Castro, Maria Isabel Herrera, John Lynch 2004. Pristimantis platychilus. In: IUCN 2014