Saddled Tree frog

Taruga eques (montane hour-glass tree-frog) is a species of frog in the Rhacophoridae family. It is endemic to Sri Lanka.
Its natural habitats are subtropical or tropical moist montane forests, subtropical or tropical high-altitude grassland, swamps, freshwater marshes, and intermittent freshwater marshes. It is threatened by habitat loss.(From-http://inaturalist.org/taxa/Taruga_eques)