Males measure 17.5–20 mm (0.69–0.79 in) and females 21 mm (0.83 in) in snout–vent length (based on only six and two specimens, respectively). Toe webbing is absent but it has a dorsolateral stripe and a short oblique lateral stripe. It is similar to Hyloxalus whymperi but lacks heavy darkening on the abdomen of males. Male call is unknown.
