Truncatellina cylindrica (FÉRUSSAC, 1807)

Shell: Dextrous, whorls 5.2-6.2. Shape cylindrical, from short to elongate. Whorls moderately convex, suture moderately deep. Aperture semicircular. Teeth and callus absent. Umbilicus deep, open. Surface sculpture of regular ribs, somewhat more delicate than in T. costulata. Colour from horny-yellowish to light goldish-brown.
Dimensions: Height 1.55-1.90 mm, breadth 0.73-1.03 mm, aperture height 0.45-0.58 mm, aperture breadth 0.45-0.58 mm, body whorl height 0.80-0.95 mm.
Ecology: Living in very dry open calcareous habitats; sunny slopes, limestone screes, rock ledges, occasionally on sand dunes; in Poland found also in habitats of anthropogenic origin: pastures, railway embankments, balks. Found among plant debris, at base of grass blades etc. In Asia and eastern part of Europe steppe and semi-desert areas.
Distribution: A Western-Palearctic species: southern and central parts of Europe - in the north to Scotland, southern part of Scandinavia and Esthonia; in the south to northern Caucasus and Transcaucasia, also north-western part of Africa and Asia Minor. In Poland common in all the studied regions, but less so in the northern part of the country; in the mountains up to 1300 m a.s.l.