Oreobates pereger, also known as the Ayacucho Andes frog, is a species of frog in the family Strabomantidae. It is endemic to Peru where it is known from the eastern slopes of the Cordillera Oriental and Cordillera Vilcabamba mountain ranges.[1]
Male Oreobates pereger grow to a snout–vent length of 21mm25mm and females to 24mm32mm. The skin of dorsum and venter is smooth and with dark gray, reddish-brown, or dark gray-brown ground colour. The flanks are yellowish brown to dull yellow with an orange suffusion ventrally.[2]
Eggs are large and yellow, up to 4mm in diameter. Fecundity is about 18–20.[2]
Oreobates pereger is a terrestrial frog inhabiting montane cloud forests at elevations of 1600m–2900mm (5,200feet–9,500feetm) above sea level. It is threatened by habitat loss caused by agricultural expansion, wood collecting, and human settlement.