Scutalus mariopenai is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Bulimulidae.

[1] Scutalus mariopenai is characterized by the broadly expanded and callous lip, the fine, punctuate granulation, and the whitish-corneous ground colour, with four brown spiral bands on the last whorl.

[1] The shell height is up to 41.1 mm, 1.65 times as long as wide, umbilicate and deeply perforated, conical, with slightly convex sides and solid.

The surface is lustreless, with growth striae and spiral lines of fine, punctuate granulation, starting shallowly on the postnepionic whorl, but becoming rapidly more conspicuous on the following and fading away inside the umbilicus.

[1] Type material: apertural and abapertural views of two shells of Scutalus mariopenai showing its color variability: Living animal is whitish- to pale-grey, with a dark-greyish band along the foot.

Cajamarca, Río Chancay valley, between Chiclayo and Chota, 80 km north of Quinden (ca.

It may also be compared to Scutalus cretaceus (Pfeiffer, 1855) from which it differs by being less elongate, having a stronger sculpture on the last whorl, having the inside of the aperture whitish coloured; having the lip more broadly expanded.