This species is known from the eastern side of the Andes, in Ecuador, in two general areas: four localities between 480 and 970m asl in Pastaza Province in central Ecuador, and Centro Shuar Yawi, at 920-1,040m asl, in Zamora Chinchipe Province in south-eastern Ecuador. Records from Peru require confirmation.
Habitat and Ecology
It occurs in eastern Cordillera Real montane forests and Napo moist forests. The distribution lies mainly within very humid premontane forest and pluvial premontane forest. As with other members of the genus, it probably breeds on the ground, under rocks or in leaf-litter, and the larvae are carried by the parent to streams. Most members of this genus do not adapt well to anthropogenic disturbance.
It was discovered in Zamora Chinchipe Province in 2003. However, surveys in Pastaza Province have not turned up any additional records of this species since it was first discovered.
The main threat to the species is habitat loss and degradation due to agriculture, involving both crops and livestock, as well as logging and infrastructure development for human settlement.
It is not known to occur in any protected areas, and some form of formal habitat protection is urgently needed. Further survey work is necessary to determine the status of the the subpopulation in Pastaza Province.
Red List Status
Listed as Endangered because its Extent of Occurrence is less than 5,000 km2, all individuals are in fewer than five locations, and there is continuing decline in the extent and quality of its habitat in the Amazonian foothills of the Andes in Ecuador
Luis A. Coloma, Diego Almeida, Fernando Nogales, Ana Almendáriz, Diego Cisneros-Heredia, Karl-Heinz Jungfer, Santiago Ron 2004. Hyloxalus cevallosi. The IUCN Red List of Threatened Species 2004: e.T55065A11247094. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T55065A11247094.en