Acanthinula aculeata is a species of small, air-breathing land snail, a terrestrial pulmonate gastropod mollusk or micromollusk in the family Valloniidae.
For terms see gastropod shell.
The 1.9-2.1 mm. shell is slightly higher than wide and brown in colour. The periostracum bears ribs ( elevated, radial ridges) with characteristic spines. The aperture is circular. The animal is grey on the dorsum and tentacles. The foot and sole margin are white.
This species is found in Bulgaria, the Czech Republic, Estonia, Poland, the Netherlands, Slovakia, Great Britain, Ireland, Ukraine and elsewhere.