Psychrophrynella wettsteini is known from the surroundings of the area of Unduavi, in the Unduavi Valley, Province of Sud Yungas, Department of La Paz (16 19' S, 67 54' W), and the locality of Coscapa, which is within the contiguous Cotapata preserved area and is 3.1 km (airline) from the type locality. Although it is most abundant between 3200 and 3700 m, the total altitudinal range of the species is 2900–3900 masl (De la Riva, 2007 and references therein).
Habitat and Ecology
The species has been found from the upper limits of the cloud forest to humid paramo grassland. Individuals are found under stones and are active by day and night, including calling activity (De la Riva, 2007). Gravid females have been reported to have an average of 13 eggs 5 mm in diameter during the months of March, July, August, and December, and clutches have been found under stones in August an January (De la Riva, 2007 and references therein).
The species survives well in in disturbed habitats.
It is an abundant species.
The major threats to this species are not known. It is possibly threatened by general agricultural activities.
The species is known to occur in Coscapa, which is within the contiguous Cotapata preserved area (De la Riva, 2007).
Lehr (2006) recently synonymized Phrynopus laplacai under Psychrophrynella wettsteini.
Ignacio De la Riva 2008. Psychrophrynella wettsteini. In: IUCN 2014