This species is known only from the type locality, "Simbang", on the Huon Peninsula in Morobe Province, Papua New Guinea.
Habitat and Ecology
It presumably occurs adjacent to streams in tropical rainforest. If it is similar to other species in the genus, it lays large eggs in torrential, clear and rocky streams, and the larvae have large suckers.
There are no known records of this species since it was first described, so its population status is unknown.
There are no data available on threats to this species.
Given the declines of torrent-dwelling hylids in Australia, the population status of this species requires close monitoring.
Stephen Richards, Fred Parker 2004. Nyctimystes obsoletus. In: IUCN 2014