This species is restricted to the peak of Volcán Sumaco, in Napo Province, Ecuador, at around 3,900m asl. It is not likely to occur elsewhere.
Habitat and Ecology
It lives in high-elevation grassland and bushland habitats on the Volcán Sumaco. It is presumed to breed by direct development, but the site of egg deposition is not known.
The population status of this species is unknown.
There is no recent information on threats in its only known locality. Its highly restricted range renders it susceptible to stochastic threatening processes.
It is not known from any protected areas. There is a need for further survey work to investigate the current population status of this species, and to determine whether or not there are any immediate threats at present. Close population monitoring is required given that it is known only from the Volcán Sumaco.
John Lynch, Luis A. Coloma, Santiago Ron 2004. Pristimantis ernesti. In: IUCN 2014