Rhacophorus norhayatii

The orange-sided whipping frog, also called Norhayati's gliding frog or Wallace's orange-sided tree frog, is a frog in the family Rhacophoridae observed in Malaysia, Myanmar and Thailand, though scientists believe the Sumatran population may be another closely related species. It was believed to be the same as Rhacophorus reinwardtii until 2010 (Wikipedia, general species account).