This species is known only from the type locality on the east slope of Goodenough Island, in the D'Entrecasteaux Islands, Papua New Guinea, at about 900m asl.
Habitat and Ecology
It inhabits small streams in forest. As with other species in the genus, this species presumably lays large eggs in torrential, clear and rocky streams and the tadpoles presumably have large suckers.
The current population status is unknown. It has been recorded on Goodenough Island at least once since it was first described, but has not been found on neighbouring islands.
The habitat on Goodenough Island is heavily impacted by gardening and fires, as well as expanding human populations, up to 300m asl, but is still intact at higher altitudes.
It is not known from any protected areas. There is a need for close population monitoring of this species, given declines that have taken place in torrent-dwelling hylids in Australia and particularly given its small range. Further survey work is also necessary to better understand the distribution (including its possible occurrence on other islands and on the mainland of New Guinea), habitat requirements, and population status of this species.
Red List Status
Listed as Vulnerable because it is known from fewer than five locations.
Stephen Richards, Allen Allison 2004. Nyctimystes avocalis. The IUCN Red List of Threatened Species 2004: e.T55766A11362366. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T55766A11362366.en .Downloaded on 14 December 2018