[1][3] The specific name refers to the whitish protuberances on the lips that resemble a mustache in the frontal view of the male holotype.

The tail is shorter than the body, with total lengths of about 85 and 69 mm (3.3 and 2.7 in) for the two specimens, respectively.

The dorsum is gray in its ground color with faint traces of pink especially on the snout, and with scattered black dots.

[2] Its natural habitat are pine–oak and Arbutus forests at elevations of about 2,100 m (6,900 ft) above sea level.

[1] The short and stout limbs of this species suggest that it is terrestrial rather than a climber.