Pristimantis adiastolus
family: Strabomantidae
subfamily: Pristimantinae
Species Description: Duellman WE, Hedges SB 2007 Three new species of Pristimantis (Lissamphibia, Anura) from montane forests of the Cordiller Yanachaga in Central Peru. Phyllomedusa 6:119-135.
Conservation Status (definitions)
IUCN (Red List) Status Data Deficient (DD)
Other International Status None
National Status None
Regional Status None

Country distribution from AmphibiaWeb's database: Peru


View distribution map using BerkeleyMapper.


From the IUCN Red List Species Account:


Range Description

This species was originally known only from the type locality, 1.5 km NW of Cacazú, 1,200 m asl, Department of Pasco, Peru (Duellman and Hedges 2007), but was more recently recorded at 2,140 m asl at Abra Esperanza, in the buffer zone of Yanachaga Chemillén National Park in Pasco (Chávez et al. 2012). This species is very likely to occur more widely, particularly in Yanachaga Chemillén National Park, along the Llamaquizú River, and Bosque de Sho´llet, between 1,000–2,500 m asl (G. Chávez pers. comm. February 2018), which is reflected in the species' distribution map. The extent of occurrence (EOO) of its known range is 1,110 km2.

Habitat and Ecology

The species is found in riparian and montane cloud forests. The holotype was found perching on a leaf at ca 1.5 m above the ground in riparian forest at night. It uses vegetation very close to water bodies (Chávez et al. 2012). It is expected to reproduce by direct development, as with other congeners. It is unlikely the species can be found in open areas (G. Chávez pers. comm. February 2018).


The species was formerly only known from a few specimens, but surveys during 2011-2012 recorded ca 50 additional specimens in Bosque de Sho´llet and at Abra Esperanza just outside of Yanachaga Chemillén National Park (Chávez et al. 2012, G. Chávez pers. comm. February 2018). The species is relatively abundant where it occurs, and a healthy population of this frog probably exists both inside and outside Yanachaga Chemillén National Park (G. Chávez pers. comm. February 2018). Taxonomic confusion has caused this species to be misidentified in the past which may explain why it is usually absent from checklists of species of the area (G. Chávez pers. comm. February 2018).

Population Trend


Major Threats

No anthropogenic disturbances are currently threatening the species within protected areas (G. Chávez pers. comm. February 2018). The main threat outside Yanachaga Chemillén National Park is habitat loss caused by deforestation for livestock and agriculture, mainly granadilla (G. Chávez pers. comm. February 2018). While these activities are contributing to general habitat loss within a portion of its range, they are not thought to be causing population declines.

Conservation Actions

Conservation Actions
This species occurs in Área de Conservación Bosque de Sho´llet and Yanachaga-Chemillén National Park.

Research Needed
More information is needed on this species' distribution, population status, ecology, and threats.

Red List Status

Data Deficient (DD)


Listed as Least Concern because, although its distribution is limited – its estimated extent of occurrence (EOO) is 1,110 km2 – it occurs in a well protected national park, a healthy population of this frog is thought to exist, and threats outside of the park are currently localised and not thought to be causing declines at present.

Taxonomic Notes

Recently placed in the family Strabomantidae by Hedges et al. (2008).


IUCN SSC Amphibian Specialist Group 2018. Pristimantis adiastolus. The IUCN Red List of Threatened Species 2018: e.T136105A89220621. .Downloaded on 20 January 2019


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