New species discovered in Foja mountains on Indonesian island of New Guinea

Aerial view of Foja mountains rainforest, on the Indonesian island of New Guinea. The expedition was conducted with financial and scientific support from the National Geographic Society, Smithsonian Institution, and Indonesian Institute of Sciences and marked a return visit to a mountainous region recognised by scientists as a profound species generator because of its relative isolation, elevation, and tropical environment
Photograph: Tim Laman/NG

Harry Sutrisno of the Indonesian Institute of Sciences traps moths
Photograph: Tim Laman/NG

New species of gecko discovered by herpetologist Paul Oliver from Australia, with funding from the National Geographic Society
Photograph: Tim Laman/NG

Tree mouse (Pogonomys sp nov) Likely new species, discovered by Kristofer Helgen of the Smithsonian Institution
Photograph: Tim Laman/NG

A new species of giant woolly rat (Mallomys sp nov)
Photograph: Tim Laman/NG

Long-nosed tree frog (Litoria sp nov) discovered by Paul Oliver of Australia with funding from the National Geographic Society. This frog, which was observed to have a long, Pinocchio-like protuberance on its nose that points upwards when the male is calling but deflates and points downwards when he is less active, represents a particularly distinctive find that scientists are interested in documenting and studying further
Photograph: Tim Laman/NG

Mammalogist Kristofer Helgen of the Smithsonian Institution holds a new species of wallaby he discovered (Dorcopsulus sp nov), the world's tiniest known member of the kangaroo family
Photograph: Tim Laman/NG

Blossom bat (Syconycteris sp nov) which feeds on rainforest nectar
Photograph: Tim Laman/NG

Imperial pigeon (Ducula sp nov)
Photograph: Neville Kemp/NG

A new species of butterfly (Ideopsis fojana)
Photograph: Henk van Mastrigt/NG