This species is known only from the vicinity of the type locality, Esperanza, in Huallaga Province, San Martín Department, in the northern part of the Cordillera Central of northern Peru, between 3,119–3,435 m asl (Duellman and Venegas 2005, Duellman and Trueb 2015).
Habitat and Ecology
This species occurs in Yungas forest, where individuals were found during the day in areas of bunch grass and Baccharis species, associated with spiny terrestrial bromeliads and scattered shrubs (Duellman and Venegas 2005). It reproduces by larval development. Several larvae were found in a small muddy-bottomed pool 40 cm deep.
There is no information available on the population status of this species. It is known only from a few specimens.
There is no information on threats to this species.
It occurs in Los Chilchos Private Conservation Area, designated in 2012.
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, population status, ecological requirements, and threats.
IUCN SSC Amphibian Specialist Group 2018. Gastrotheca phalarosa. The IUCN Red List of Threatened Species 2018: e.T61824A89215385. http://dx.doi.org/10.2305/IUCN.UK.2018-2.RLTS.T61824A89215385.en .Downloaded on 21 January 2019