This species is currently known only from the vicinity of the type locality, the northern slope of Mount Simpson in the Owen Stanley Range in Milne Bay Province, south-eastern Papua New Guinea., where it has been recorded from 1,400-1,540m asl. It might occur more widely, in particular throughout the lower montane forest of Mount Simpson. However, it is not known whether or not it will range as far as the montane forests of Mount Dayman or Mount Suckling to the north, as there is intervening grassland between these localities.
Habitat and Ecology
It is found perching on leaves and stems 1-3m above the ground in primary lower montane forest. It particularly prefers forest clearings, forest edges and river edge habitat where it can often be seen in abundance. The males call at night. This is presumably a direct developing species, like other species in the genus.
This species is abundant at the type locality, but is patchily distributed.
There are no known threats to it.
It has not been recorded from any protected areas.
Allen Allison 2006. Choerophryne sanguinopicta. In: IUCN 2014