Its local name is ranita de labio blanco or sapito de labio blanco ("white-lipped froglet") and English name either Gunther's white-lipped frog or Hispaniolan ditch frog.

The tadpoles are brown colored, reaching about 1.5 inches (38 millimeters) in length.

In general, adults grow to 1.4 inches (3.6 centimeters) in snout-vent length, but like other Puerto Rican frogs the body size increases with elevation and adults of a snout-vent length greater than 2.0 inches (5.1 centimeters) are not rare in the higher regions of the El Yunque National Forest.

[3] The frog's diet includes insects, millipedes and land snails.

It lays terrestrial eggs, but they are laid in a foam nest on the ground, usually under a rock or log.