This is a recently described species known from the eastern slope of Abra Pardo Miguel (San Martin Department) on the eastern slopes of the northern part of the Cordillera Oriental in northern Peru; and from La Pituca, Río Curintza (Zamora), Ecuador. It has an altitudinal range of 1,800-2,000m asl.
Habitat and Ecology
The Peruvian locality is a stream with rocky banks in humid, upper montane forest. Stones along the edge of the stream are covered with moss. The frogs were found by day in cavities between stones. According to Schulte (pers. comm.), the frogs are "imitating exactly a mossy stone". This species breeds by direct development.
Only a few individuals have been observed, and four adult females were used to describe this species. Those specimens are poorly preserved as they died en route from the type locality to the collector's home in Tarapoto, Peru.
There is some localized habitat loss due to activities such as agriculture (both the cultivation of crops and the rearing of livestock) that might be a threat to this species. Gold mining might affect it in Ecuador.
Both sites from which it is known are within protected areas: the Bosque de Protección Alto Mayo in Peru, and Parque Nacional Podocarpus in Ecuador. Additional taxonomic research is required to resolve the taxonomic status of this species.
This species might consist of a complex of more than one species.
Lily Rodríguez, Jorge Luis Martinez, Javier Icochea, Karl-Heinz Jungfer, Diego Cisneros-Heredia 2004. Pristimantis muscosus. In: IUCN 2014