Description: Shell dextral, low conical, medium size, diameter up to 39.4 mm, height up to 27.2 mm, rather thick, slightly transparent; with rather keeled periphery. Whorls 5/4-5%, convex, regularly increasing in size; suture distinct, but not deep. Apex whitish, early 2VA-2xA whorls smooth with very fine granulation and radial striae not visible, next whorl's radial striae fine and getting coarser towards the last whorl, spiral striae fine, radial and spiral striae fine below periphery. Colour light brown to brown or greyish brown, a whitish band at periphery, a dark brown spiral band above periphery and a brown band sometimes visible below periphery, a dark brown spiral band above suture, slightly lighter colour zone around umbilicus. Aperture rather rhomboid in shape, of a brown colour and a whitish band visible inside. Parietal wall overlaid with thin translucent callus. Peristome simple; umbilicus open, small, partly concealed by broadened and recurved columellar side. Measurements: D: 34.6-39.4 mm, H: 23.5-27.2 mm, H/D: 0.68-0.76.

Besides having a more convex outline above the periphery, a keeled periphery and nearly flat or slightly convex outline below the periphery, Asperitas crystalae sp. nov. also has a denser shell than the other known Asperitas that are a bit fragile. Compared with A. stuartiae yani from West Timor, Indonesia, which has a rather keeled periphery, A. crystalae sp. nov. has a more convex shell outline above the periphery, a nearly flat or slightly convex outline below the periphery, a smaller shell size, and fine radial striae.

Type Locality: Wovvonii (Wowoni) Island, South East Sulawesi Province, Indonesia.
Distribution: Only known from Wowonii Island in South East Sulawesi Province, Indonesia.