A small frog with snout-vent length up to 43 mm for males, 49 mm for females. Mostly brown, occasionally green. No or little webbing on the hind toes. No external eardrum (Gill and Whitaker 1996). Has defensive granular glands in skin, which are concentrated into discrete dorsal patches arranged down the back and sides in about six longitudinal rows. The middle row is the most prominent. The glands are also on the dorsal surface of legs and feet, and to a lesser extent, the arms (Green 1988).