This species is known from the Municipality of El Tambo in Cauca Department, northwards to the municipality of El Cairo in Valle del Cauca Department, in Colombia, between 1,470 and 1,960m asl.
Habitat and Ecology
It occurs in leaf-litter on the ground near streams in primary or good secondary cloud forests, and has not been recorded outside forest habitat. The female lays terrestrial eggs; when they have hatched the male carries the larvae on his back to streams where they then develop further.
It is a relatively common species.
Localized threats to this species are habitat fragmentation caused by the expansion of agriculture and cattle ranching, as well as water pollution from pesticides and the fumigation of illegal crops.
The range of this species includes Parque Nacional Natural Farallones de Cali.
Taran Grant, Fernando Castro 2004. Hyloxalus fascianigrus. In: IUCN 2014