This species is known only from around a small crater lake on the eastern slopes of Volcán Sumaco, in Napo Province, Ecuador, at 2,500m asl.
Habitat and Ecology
It is an inhabitant of the cloud forest surrounding the lake. This forest is made up of bamboo (Chusquea sp.), Ficus and other trees up to 20m tall. There is an abundance of epiphytes in the area. It is terrestrial, both diurnal and nocturnal, and specimens have been found under leaf-litter by day (Gluesenkamp 1995). It breeds by direct development, and lays its eggs on soil under vegetation.
It is locally common.
There are no current major threats to the species, although eruption of Volcán Sumaco poses a future potential threat to its only known site.
It is present in Parque Nacional Sumaco. There is a need for close population monitoring of this species, particularly given its restriction to a single location.
Red List Status
Listed as Vulnerable because it is known from only a single location.
Luis A. Coloma, Santiago Ron, Diego Cisneros-Heredia, Ana Almendáriz 2004. Osornophryne sumacoensis. The IUCN Red List of Threatened Species 2004: e.T54859A11203411. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T54859A11203411.en