Ampelita stilpna is a species of tropical air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Acavidae.
The height of the shell attains 19 mm, its diameter 39 mm.
(Original description in French) This subglobular-depressed shell is umbilicate, solid, and rather thick, featuring coarse ribbed-striations and three reddish-brown bands. Two bands are on the upper surface, while the third encircles the umbilical region. The spire is very obtuse, mammillated, and only slightly raised, with a large apex. The whorls are convex, rapidly growing, and the body whorl is large and well-rounded at the periphery, lacking any angularity. The umbilicus is moderately sized, slightly flared, revealing the spiral coiling, and is weakly indented by the reflected columellar edge.
This species is endemic to Madagascar.