This species is known only from a small area in the western slopes of the Cordillera Occidental, at La Planada at 1,200m asl in the department of Nariño, extreme southern Colombia, and just across the border at Maldonado at 1,410m asl, in the province of Carchi, extreme northern Ecuador.
Habitat and Ecology
It is an inhabitant of cloud forest, and is associated with the spray zones of waterfalls, where it lives on vegetation and rocks. Its ability to adapt to modified habitats is unknown, but it is unlikely to tolerate significant habitat alteration. It is presumed to breed by direct development, but the site of egg deposition is not known.
It is a rare species.
The major threats are likely to be habitat loss and degradation, due to agricultural development, plantations, cultivation of 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, but there is a need for further protection of cloud forest habitat in the region.
Fernando Castro, Santiago Ron, Luis A. Coloma 2004. Pristimantis loustes. In: IUCN 2014