This species is known from two streams at altitudes of 500 and 730 m asl on ridges extending from the Andes into the Amazonian Basin in San Martín Region, and from Río Pauya, Loreto Region, in northern Peru. It is likely to range much more widely throughout the Amazon Basin.
Habitat and Ecology
All adults were found on mossy boulders, and some juveniles were also discovered on herbaceous vegetation, at night in a deep ravine in lower humid montane forest. The type locality is a rocky gorge into which two streams plunge. The sides of the gorge are nearly vertical rock walls, and the floor of the gorge is littered with huge boulders, many of which support thin layers of moss. The second locality is a wooded, boulder-strewn with cacade stream on the road. This species breeds by direct development.
There is little information on the population size and trends of this species.
Within its current known range it is threatened by loss of habitat through agricultural development, including the establishment of coffee plantations, selective wood extraction and human settlement. If this species is restricted to specific 'rocky gorge' type habitats, it might be particularly sensitive to habitat disturbance.
It occurs in Área de Conservación Regional Cordillera Escalera and may also occur in Parque Nacional Cordillera Azul.
More information is needed on this species' distribution, population status, ecology, and threats.
Red List Status
Data Deficient (DD)
Listed as Data Deficient in view of continuing uncertainties as to its extent of occurrence, status and ecological requirements.
IUCN SSC Amphibian Specialist Group 2018. Pristimantis bearsei. The IUCN Red List of Threatened Species 2018: e.T56456A89205491. http://dx.doi.org/10.2305/IUCN.UK.2018-1.RLTS.T56456A89205491.en .Downloaded on 20 January 2019