Ansonia longidigita (literally "long-fingered") is a common toad of mid-elevation hills. Adults come to breed in small, clear brooks and streams. Males call from boulders in the stream or from nearby vegetation. 

Ansonia longidigita is somewhat similar to Ansonia leptopus but has elevated spiny warts with keratinized tips and the spines under the mandible are black. Also it lacks the conspicuously large and flat warts pressent in A. leptopus. The nuptial pads in males are yellowish.

Size of adults males 40–50 mm, females up to 70 mm snout-vent length.

Tadpoles of this species are very small and commonly <15 mm. They have dark markings on cream background color, similar to tadpoles of Ansonia leptopus but with a distinctly different pattern of the dark blotches. Also, A. longidigita tadpoles have a larger and even more ventral oral disk than A. leptopus.