Columella aspera

Columella aspera is a species of very small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family of Truncatellinidae, the vertigo snails and allies.^[1]

Columella aspera
Shell of Columella aspera (specimen at MNHN, Pzris)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Stylommatophora
Family:	Truncatellinidae
Genus:	Columella
Species:	C. aspera
Binomial name
Columella aspera Waldén, 1966

Description

The 2.0-2.5 x 1.3-1.4 mm. shell has 4-5 whorls and the spire tapers towards the apex. The aperture is simple without teeth. The colour is dark grey brown or horny brown. The surface is not shiny and finely and regularly striated. It is more coarsely sculptured than the very similar Columella edentula.

Distribution

This species occurs in countries and islands including:

• Czech Republic
• Great Britain
• Ireland