[1] The adult male frog measures 41.6–45.4 mm in snout-vent length and scientists reported one female frog to be 49.2 mm long.

This skin of the dorsum is medium-brown in color, with one dark stripe running down each side from the nose to the groin.

[3] This frog has vomerine teeth in its jaw and climbing disks on its toes.

[3] The scientists who wrote the first paper about this frog named it after their friend and mentor, Dr. Robert F. Inger.

Dr. Inger worked as Curator Emeritus of Amphibians and Reptiles at the Field Museum of Natural History.