This species is known from the type locality near Plan de Milagro, Morona Santiago Province, Ecuador, at 2,350m asl; and disjunctively at the Estación Biólogica Yanayacu, on the eastern slope of the Cordillera Oriental, Napo Province, Ecuador, at 2,145m asl. Its distribution might be wider than is currently recognized, especially in the area between the currently known sites.
Habitat and Ecology
This species lives in cloud forest, where specimens have been collected from the upper sides of leaves and ferns within 2m of cascading streams (Wild 1994). It is found in old growth forest only. Eggs are laid on vegetation, and the larvae develop in water.
Although it was common at Yanayacu in 2003, it was rare when it was collected near Plan de Milagro in 1984.
Habitat destruction and degradation due to agricultural development and logging are threats to this species. It has what appears to be a very narrow altitudinal range, potentially making it vulnerable to climate change.
It is not currently known to occur in any of the Ecuadorian state natural protected areas. It is, however, protected at the Estación Biólogica Yanayacu.
Luis A. Coloma, Santiago Ron, Diego Almeida 2004. Nymphargus cariticommatus. In: IUCN 2014