It is endemic to South Brazil and has been recorded in the Paraná, Santa Catarina, and Rio Grande do Sul states.

Dorsal skin is granular and warty, bearing variably arranged and sized tubercles and ridges.

Two distinct longitudinal rows of tubercles extend from behind the upper eyelids over the dorsum to the vent, forming two curved ridges.

The lower surfaces are predominantly black but have a variable distinct pattern of bright red or orange-red blotches and spots on chest and venter.

Finger length, tip of snout, and tubercles on eyelids are characteristics that vary slightly from a male and female.