This species is endemic to austral forests of Chile (western slopes of the Andes from 39°S to 51°S) and Argentina, from Shangrila (37°S) to 53°S in the Fuegian Archipelago. This species is the southernmost amphibian in the world, together with Batrachyla antartandica. Its elevational range is between 0-2,000m asl (northern Patagonia, Argentina).
Habitat and Ecology
Its habitat is in temperate to cold humid forests, bogs, and magallanic tundra. Occurs in marshes, under logs in the Nothofagus forest region as well as tundra surrounded by low stature Nothofagus forest in the subantartic region. Reproduces in shallow temporary pools and swamps. Tolerates some disturbance.
It is a locally abundant species. Reported to be abundant in 2002 on Isla Wellington, Chile. In Argentina it is more common in the south of the country.
Not threatened over the majority of its range. Habitat destruction and degradation (native forest loss) is a localized threat.
A number of protected areas (more than 10) are present along the entire latitudinal range of Nannophryne variegata. Species is listed as "Insufficiently Known" (Inadecuadamente Conocida) by Chile (Reglamento de la Ley de Caza, Chile, 1998) for VIII, IX and X Regions. National legislation to preserve the native Nothofagus forest is necessary for Chile.
More than one species might be involved under this name. Further study is required.
Carmen Úbeda, Alberto Veloso, Herman Núñez, Néstor Basso, Boris Blotto 2010. Nannophryne variegata. In: IUCN 2014