This species is known from the type locality of Venceremos, 394–395 km along the Marginal de la Selva road (San Martin Department), on the eastern slopes of the central Andes in northern Peru, and has since been reported from several additional localities in the Cordillera Central (Duellman 2004). Most records are from between 1,620 to 2,200 m asl., but there are two records at higher elevations (one from 2,280 m asl. and one from 2,840 m) (Duellman 2004). The exact number of sites where the species occurs is unknown; Duellman (2004) examines specimens from eight localities.
Habitat and Ecology
This is a diurnal species known from humid tropical montane forest, where it has been found at seepages and along small streams (Duellman 2004). Males have been recorded transporting batches of 7–12 tadpoles on their backs; larval development is completed in slow-moving and sometimes marshy streams (Duellman 2004). Both adults and larvae have been recorded from disturbed forest and cultivated land close to human settlements (Duellman 2004), indicating some tolerance of habitat modification.
Its population status is unknown.
This species has a very restricted geographic range, but there is no information on major threats. The fungal disease chytridiomycosis was first reported from Peru in 1998 (Lips et al. 2008), and has been responsible for severe declines and extinctions among Andean amphibians, especially of high-elevation, stream-breeding frogs with small ranges (Whittaker and Vrendenberg 2010). It is however unknown whether this disease represents a specific threat to this species.
No conservation actions are currently known for this species, and it is not known from any national protected areas. It appears to be resilient to some degree of habitat disturbance, but the extent of this tolerance is unknown. More information is needed on this species' distribution, population status, natural history and threats.
IUCN SSC Amphibian Specialist Group, 2012. Hyloxalus idiomelus. In: IUCN 2014