Adult: Species description based on Duellman (2001). A large treefrog with a large head (males to 87 mm, females to 98 mm). Dorsal: The dorsal surface is bright green. The sides of the body are green, with some pale blue spots or flecks. The upper lip is lined in white; this line extends through the arm to about midway down the side of the body. Ventral: The ventral surface is heavily pigmented with brown, but scattered white spots or blotches are present. Some orange may be present on the belly. Concealed surfaces: The rear surfaces of the thighs may have some orange pigmentation that extends up from the ventral surface. Eye: The eye is striking. The iris is golden or bronzy orange, with minute black reticulations.
Habitat: Lowland and premontane forest to 1300 m. Call: The call has not been characterized. Type locality: 1 km west-southwest of the junction of the Río Mono and the Río Tuira, Darién Province, Panamá, elevation 130 m