Similarly to gliding geckos of the genus Gekko (formerly Ptychozoon), these patagia are derived from expansion of fat in the sides.
[4] Snout longer than the distance between the eye and the ear opening, one time and a half the diameter of the orbit; forehead concave; ear-opening small, oval, oblique.
Body depressed, covered above with uniform small granules, largest on the snout; a dermal expansion from axilla to groin and another along the posterior side of the hind limb.
Tail depressed, flat inferiorly, with sharp denticulated lateral edge, covered above with uniform small granules, below with a median series of transversely dilated plates.
[5] It is found in Bangladesh, India (Darjeeling, Sikkim, Nicobar Islands), Nepal, Bhutan, China (Guangdong, southeastern Tibet), Taiwan, Sri Lanka, Thailand, Cambodia, Malaysia (including Tioman), Burma, Vietnam, Indonesia (Sumatra, Java, Sulawesi, Lombok, Sumbawa, Flores, Irian), and the Philippines (Palawan, Calamian Islands, Panay, Luzon).