This Peruvian endemic is known from Abra Accanacu, Paucartambo, in the department of Cusco. The original publication gives an incorrect locality of "near Juliaca, Departamento: Puno". Records from Bolivia are misidentifications. It is present at elevations of 2,800-3,500 m asl.
Habitat and Ecology
It can be found in the altiplano shrublands, and may be found at the edges of agricultural land (but not in cultivated areas). It breeds by direct development.
It is common where it occurs.
General habitat loss through agricultural activity (cultivation of potatoes) and other human activities is the major threat.
It is probably present in Parque Nacional Manu, but populations occurring outside the park remain in need of protection.
Populations previously assessed as Noblella peruviana in fact pertain to Psychrophrynella usurpator.
Javier Icochea, Edgar Lehr, Wilfredo Arizabal 2004. Psychrophrynella usurpator. In: IUCN 2014