Aplastodiscus cochranae is a species of frog in the family Hylidae. It is endemic to the coastal mountains of Santa Catarina, Brazil. The specific name cochranae honors Doris Mable Cochran, an American herpetologist. Common name canebrake treefrog has been coined for this species.
Adult males measure 41–46 mm (1.6–1.8 in) and adult females, based on only two specimens, 45–50 mm (1.8–2.0 in) in snout–vent length. The overall appearance is robust. The snout is rounded, but may be truncated in lateral view. The tympanum is covered by skin but is visible in most specimens. The supra-tympanic fold is well-developed. The fingers have large discs and webbing between fingers II to IV. The toe discs are smaller than those on the fingers; there is basal webbing between the toes II to V. The dorsal coloration is cream-rosy to reddish-brown with scattered melanophores. A black line passes from the nostril along the canthus rostralis to the eye. The lower parts have light pink color, and flanks and joints show violet tones. Males have single subgular vocal sac.
Late-stage tadpoles (Gosner stage 36) are dorsally grayish brown and ventrally grayish. They measure 62–64 mm (2.4–2.5 in) in total length, of which the body makes one third.
