Pristimantis paramerus is only known from the region of Mucubají, state of Mérida, Venezuela, in páramo habitats, between 3200 and 3330 masl (La Marca, 2007).
Habitat and Ecology
It is a terrestrial inhabitant of páramo grassland, and breeding is by direct development.
Individuals of this species have always been found associated to rocks in páramo streams (La Marca, 2007).
It is an uncommon species. Vial and Saylor (1993) recorded the species as undergoing population declines, but failed to provide any documented evidence to support this view. Subsequently, Barrio-Amorós (2001) reported an alarming decline, to the point where it is now very difficult to find.
The major threat is habitat loss, due to agricultural activities (the cultivation of crops) and fire, and associated pollution.
It occurs in Sierra Nevada National Park (Páramo of Mucubají).
La Marca (2007) recently erected the genus Mucubatrachus to accommodate species that have a dermal fold posterior to the urostyle and before the cloaca. Hedges et al. (2008), however, subsequently placed Mucubatrachus in the synonymy of Pristimantis.
Enrique La Marca 2008. Pristimantis paramerus. In: IUCN 2014