Stephen Dalton / Wallace's flying frog (Rhacophorus nigropalmatus) gliding from tree, controlled conditions, from Malaysia and Indonesia

Chien Lee / Wallace's Flying Frog (Rhacophorus nigropalmatus), Gunung Penrissen, Sarawak, Borneo, Malaysia

Chien Lee / Wallace's Flying Frog (Rhacophorus nigropalmatus) gliding, Danum Valley Field Center, Sabah, Borneo, Malaysia

Nick Garbutt / Wallace's Flying frog (Rhacophorus nigropalmatus) male from lowland dipterocarp rainforest, Danum Valley, Sabah, Borneo. Photographed in situ in makeshift studio in the forest.

Nick Garbutt / Wallace's flying frog (Rhacophorus nigropalmatus) male from lowland dipterocarp rainforest, Danum Valley, Sabah, Borneo. Photographed in situ in makeshift studio in the forest.

Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) on a tree trunk in the lowland rainforest, Danum Valley Conservation Area, Sabah, Borneo, Malaysia.

Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) on tree trunk in lowland rainforest showing webbed feet, Danum Valley Conservation Area, Sabah, Borneo, Malaysia

Stephen Dalton / Wallace's gliding frog (Rhacophorus nigropalmatus) flying, controlled conditions

Stephen Dalton / Wallace's gliding frog (Rhacophorus nigropalmatus) flying, controlled conditions

Stephen Dalton / Wallace's flying frog (Rhacophorus nigropalmatus) leaping, controlled conditions, from Asia

Stephen Dalton / Wallace's flying frog (Rhacophorus nigropalmatus) gliding from tree, controlled conditions, from Malaysia and Indonesia

Stephen Dalton / Wallace's / Abah river flying frog (Rhacophorus nigropalmatus) gliding, controlled conditions, showing use of webbed feet, from Malaysia and Indonesia