Adult: Species description based on Savage (2002). A small foamfrog (males to 36 mm, females to 40 mm). Dorsal: The dorsal surface is brown and covered in dark, irregularly-shaped spots that are outlined with lighter coloration. There are two dorsolateral folds on either side of the dorsum. Otherwise, the dorsal skin is smooth. Ventral: The ventral surface is white or with a yellow tinge, turning to black at the throat. Eye: The iris is golden.
Breeding season: Breeding occurs in any number of temporary flooded areas (Savage 2002). Calling activity is higher after heavy rains, although individuals may be heard calling on most any night during the rainy seaon as well as during the day (Savage 2002). Males dig burrows into the ground and call from them (Savage 2002). Females come to the burrows where the eggs are laid in a foam nest (Savage 2002). Egg: From 72-250 eggs may be present in a single foam nest (Savage 2002). Upon hatching, tadpoles are flushed from the burrow by rising water during heavy rains (Savage 2002). Tadpole: The tadpole body is fairly round, with a moderately long, not particularly muscular tail (Savage 2002). The tail fins are not deep (Savage 2002). The body is uniform brown, although the ventral surface is lighter (Savage 2002). Some dark pigmentation may be present on the tail (Savage 2002). Tadpoles metamorphose in as few as 15 days (Savage 2002).
Habitat: Lowland and montane forest to 1500 m, as well as more open, grassy regions and areas inhabited by humans. Call: A two note "throw-up" repeated a variable number of times (Fouquette 1960, Heyer 1971, Straughan and Heyer 1976, Lee 1996, Savage 2002). Males have a pair of vocal sacs (Savage 2002). Karyotype: 2N = 22 (Bogart 1974) Type locality: Tehuantepec (Mexique) Diet: Diet consists mostly of arthropods (Savage 2002).