Adult: Species description based on Cochran and Goin (1970). A small poison frog (to 28 mm). Dorsal: The dorsum is gray in preservative. A light dorsolateral line extends from the eye along the upper side of the body to the rear, where it nearly meet the line from the other side. Thighs are lightly barred. The lip line is white. Ventral: The ventral surface is grey at the throat, gradually becoming lighter towards the rear.