This species occurs in a relatively wide area of mountains in western Papua New Guinea, extending almost to the Papuan (Indonesia) border. It almost certainly also occurs in suitable habitats in Papua, Indonesia but as yet has not been recorded from there. It occurs from 600-1,600 m asl.
Habitat and Ecology
It occurs along small streams in rainforest. Like other species in the genus, it is presumably a species that breeds by direct development.
It seems to be abundant where it occurs, and presumably has large populations throughout its known range and elsewhere in suitable, unexplored areas. It is probably stable and secure.
There are no known threats.
None required at present. It is not known from any protected areas.
Red List Status
Least Concern (LC)
Listed as Least Concern since, although its known extent of occurrence is probably not much greater than 20,000 km², it occurs in an area of extensive, suitable habitat which appears not to be under significant threat, it has a presumed large population, and it is unlikely to be in decline.
When the first assessment for this species was published (in 2004) it was under the generic name Austrochaperina. Peloso et al. (2016) transferred the species to the genus Copiula. This is not a reassessment of the status of this species; instead it is an updated version of the original assessment to reflect this taxonomic change.
Richards, S. & Zweifel, R.G. 2016. Copiula rivularis. The IUCN Red List of Threatened Species 2016: e.T57700A91487733. http://dx.doi.org/10.2305/IUCN.UK.2016-1.RLTS.T57700A91487733.en