The Barabuna tree frog (Litoria contrastens) is a species of frog in the subfamily Pelodryadinae.
It is endemic to Papua New Guinea.
Its natural habitats are swamps and rural gardens. It is threatened by habitat loss.
Litoria contrastens is part of the species-group L. bicolor, which was created to accommodate 7 species from the region that had characteristics in common.
The other members of the group are: Litoria cooloolensis and Litoria fallax in Australia; Litoria bicolor in Austrália and Papua New Guine; Litoria bibonius, Litoria longicrus and Litoria mystax in Papua New Guine.[1]