Snout long and triangular, its tip narrowly rounded; lateral margins almost straight; disc thickened centrally, length 1.2–1.3 times its width; orbit small, its diameter 6.1–7.8 in preorbital length; tail 1.3–1.5 times longer than disc; skin rough, densely covered with small denticles; no obvious patch on each shoulder or greatly enlarged thorns on snout tip and around orbit. Colour is uniformly yellowish to greyish brown, ventral surface mostly white; sides of snout translucent, sharply demarcated from rostral ridges and anterior part of cranium; snout apex usually with dark blotch.