This species is known from a few locations all within close proximity in the Cauca Department, on the western slope of the central Andes, Totoro-Malvasa, in Colombia, between 2,820 and 3,250m asl.
Habitat and Ecology
It occurs along streams on vegetation in páramo, and has not been recorded from disturbed habitat. Breeding and larval development takes place in streams.
One recent survey found no individuals, although another survey in 2004 did record several individuals. It is not known to what extent the species is in overall decline.
The most serious risk to this species is chytridiomycosis, which has had a devastating impact on other high-altitude species of Atelopus. Other, localized threats include habitat loss caused by agricultural expansion (cattle ranching and the planting of illegal crops), water extraction, and fumigation of illegal crops. Climate change might also be impacting the species.
It occurs in the Parque Nacional Natural Puracé. More research into the species' range, ecological requirements, and population status is needed, and in particular surveys are needed to determine whether or not the species is currently in decline as has been evidenced in other high-elevation stream-dwelling Atelopus species in the region. A captive-breeding programme might need to be established for this species.
Jose Vicente Rueda, Maria Isabel Herrera, Fernando Castro, Andrés Acosta-Galvis, Enrique La Marca, Wilmar Bolívar, John Lynch 2004. Atelopus eusebianus. In: IUCN 2014