This species is known from two localities, some 20km apart, in the Colombian Andes: Alto San Miguel and Aguadita, Municipios de Sibaté, and Fusagasuga, Cundinamarca Department, between 2,000 and 2,800m asl.
Habitat and Ecology
It occurs in pristine and disturbed cloud forests. Breeding and larval development take place in streams.
This species was common until the time of the last record in 1999, although there have been no subsequent surveys for the species.
The major threat is likely to be chytridiomycosis, leading to a catastrophic population decline, as has occurred in many other montane species of Atelopus. Habitat loss due to agricultural expansion, and water pollution caused by run-off from pig farms, are also serious threats faced by this species.
It is not known to occur in any protected area. Survey work is needed to determine the population status of this species; in view of the threat of chytridiomycosis, ex-situ populations might need to be established.
This species was removed from the synonymy of Atelopus ignescens by Lynch (1986).
María Cristina Ardila-Robayo, Jose Vicente Rueda, Mariela Osorno-Muñoz, Ruth Adriana Maldonado-Silva 2004. Atelopus subornatus. In: IUCN 2014