This species is known from Tolima (Falan near Mariquita), Antioquia (Anori), and Caldas Departments, between 1,100 and 2,000 m asl, in Colombia. It is believed to occur more widely. Its extent of occurrence (EOO) is estimated to be 8,492 km
Habitat and Ecology
It occurs in sub-Andean forests on vegetation alongside streams. Eggs are laid on leaves over-hanging water and when they hatch the tadpoles drop into the water below where they develop further. They require gallery forest to lay their eggs and hence are sensitive to any habitat disturbance.
It is a common species in Tolima, but is thought to be uncommon in Antioquia. The species requires gallery forest for reproduction and therefore is restricted to the small remnant forests that still exist within its range. As these remnants are typically isolated by the surrounding matrix of pastures and agricultural land uses, the population is considered to be severely fragmented (O. Cortés pers. comm. 2014).
The major threats are habitat fragmentation and loss due to agricultural expansion (including planting of illegal crops), timber extraction, mining and water pollution.
It occurs in the La Forzosa Reserve and the Ranita Dorada Reserve, which was established in 2008 (O. Cortés pers. comm. 2014). Other parts of its range have largely been deforested, so protection of remaining habitat is a priority, as is the continued enforcement of protected areas for maintaining critical forest habitat within the range. Research is needed to better understand its distribution, population status and threats.
IUCN SSC Amphibian Specialist Group 2014. Nymphargus rosada. In: IUCN 2014