Adult: Species description based on Duellman (2001). A large treefrog (females to 95 mm, males unknown). Dorsal: The dorsal surface is green and bumpy. Ventral: The venter is pinkish-white, with brown pigmentation below the head. Concealed surfaces: Coloration darkens to brown on the rear surfaces of the thighs and in the groin. Eye: The eye is brown. Extremities: The arms and legs have fringes of skin along the outer edges. The hands and feet have extensive dark webbing and end in large discs.
Habitat: This species is known only from the type locality at Cerro Mali in the Darien. Type locality: Cerro MalĂ, Darien Province, Panamá (elevation 1265 meters)