This species is known from central Sulawesi, Indonesia. It is a lowland species, found from 300–1,000 m asl, but probably occurs more widely than current records suggest. However, records from northern Sulawesi were mapped in error in the previous assessment: the species has never been recorded from there (D. Iskandar pers. comm. May 2017) and that part of its distribution has been removed from the map. The extent of occurrence (EOO) of its current known range is 6,818 km2, which can probably be divided into fewer than 10 threat-defined locations.
Habitat and Ecology
It lives along streams, in which it presumably breeds, in primary and secondary lowland forests with a canopy.
It is an uncommon species and difficult to locate. Its population is suspected to be decreasing due to ongoing decline in the quality and extent of its habitat.
The main threat to this species is the loss of its forest habitat due to smallholder farming. Water pollution due to agriculture is also a threat.
Some of its habitat is protected within Lore Lindu National Park.
Ongoing protection within the National Park and increased protection of lowland forest outside of the National Park is required.
Further work is required to better understand the species' natural history and population size, distribution, and trends.
Red List Status
Near Threatened (NT)
Listed as Vulnerable because its extent of occurrence (EOO) is 6,818 km2, it occurs in fewer than ten threat-defined locations, and there is ongoing decline in the extent and quality of its habitat.
IUCN SSC Amphibian Specialist Group 2018. Chalcorana macrops. The IUCN Red List of Threatened Species 2018: e.T58654A114924064. http://dx.doi.org/10.2305/IUCN.UK.2018-2.RLTS.T58654A114924064.en .Downloaded on 17 January 2019