This species is known from the eastern slopes of the Cordillera Oriental west of the Apurimac River, the Cordillera Vilcabamba, and Yanamonte in Ayacucho Region, Peru, between 1,650 and 2,900 m asl. It is believed to be a genuinely restricted-range species. Its extent of occurrence (EOO) is 565 km2 and all individuals are considered to occur in two threat-defined locations.
Habitat and Ecology
It is a terrestrial species, inhabiting montane cloud forest, but it is not known whether or not it occurs in degraded areas. Frogs were found under rocks and rotten wood next to the river bank of Río Yanamonte at 11:00–13:00 hr (Lehr and Aguilar 2006). It is presumed to breed by direct development. Lynch (1975) reported females having from 18 to 20 eggs.
This is considered to be a rare species (J.M. Padial pers. comm. November 2009). In 1941, 31 specimens were collected at Río Yanamonte (Lynch 1975), while six frogs were found over two hours of searching at the same locality in January 2006 (Lehr and Aguilar 2006).
The major threat is habitat loss due to agricultural expansion, subsistence wood collecting, and human settlement.
It occurs within the Vilcabamba-Amboró Conservation Corridor. It is listed as Critically Endangered (CR) in Peru and has legal protection provided by the Categorization in Endangered Species of Wild Fauna (Decreto Supremo Nº004-2014-MINAGRI), which bans all hunting, capture, possession, transport or export of the species for commercial purposes.
Designation of specific protected areas in the Andean piedmont is recommended (J.M. Padial pers. comm. November 2009).
The species is, in general, quite poorly known, and further research is needed into its distribution, population status, ecology, and threats.
Red List Status
Critically Endangered (CR)
Listed as Endangered because its extent of occurrence (EOO) is 565 km2, it occurs in two threat-defined locations, and there is continuing decline in the extent and quality of its habitat in the Peruvian Andes.
This species was included within Oreobates considering that it shares morphological characters with species of this genus (Hedges et al. 2008).
IUCN SSC Amphibian Specialist Group 2018. Oreobates pereger. The IUCN Red List of Threatened Species 2018: e.T57223A3056964. http://dx.doi.org/10.2305/IUCN.UK.2018-1.RLTS.T57223A3056964.en .Downloaded on 23 January 2019