[1][3] In the literature, it has also been mixed with Pleurodema marmorata from Bolivia and with Psychrophrynella usurpator from Peru.

Digits pointed, no terminal disks; a well-developed tarsal and two metatarsal tubercles.

Color uniform grayish brown, slightly purplish above; a broad band of dark brown extending on each side from the nostril to the lumbar region; a narrow white line on the posterior face of each thigh joining with a median line which extends anteriorly along the back for more than half its length; posterior surfaces of the lower leg indistinctly barred with dark brown.

Lower surfaces of body whitish, the chin and thigh indistinctly suffused with brown.

Reflecting the uncertainty regarding its type locality, habitat and ecology of Noblella peruviana are unknown.