This species is known only from forested slopes at elevations of 1,500-1,800m asl on the Pacific versant of the Cordillera Central in the department of Cajamarca in northern Peru. Its range is incompletely known, and it presumably occurs much more widely, but nevertheless probably has a somewhat restricted distribution.
Habitat and Ecology
Associated with streams in montane forest. At night, individuals were perched on the upper surfaces of leaves over streams; others were observed during the day resting vertically on upper leaf surfaces over streams where breeding occurred. Eggs are deposited on leaves above permanent and temporary streams, and larvae develop in the streams. It is not known if the species can adapt to modified habitats.
It is believed to be a common species; the type series is represented by 67 specimens.
The threats to the species are not well known. It is probably susceptible to localized habitat loss as a result of livestock farming and selective wood extraction. It might also be vulnerable to the effects of localized climate change and infection with the chytrid fungus.
It is not known to occur in any protected areas, and there is clearly a need for improved habitat protection of sites at which this species is known to occur. Further research is needed to help better understand the threats to this species, and close monitoring of the population is recommended given the potential risk of chytridiomycosis.
Red List Status
Listed as Vulnerable because its Extent of Occurance is presumed to be less than 20,000 km2, it is known from fewer than ten locations, and it is suggested that there is potentially a continuing decline in the extent and quality of its habitat.
Lily Rodríguez, Jorge Luis Martinez, César Aguilar Puntriano, Daniel Neira, Edgar Lehr 2004. Centrolene hesperium. The IUCN Red List of Threatened Species 2004: e.T54917A11223456. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T54917A11223456.en