Columella edentula

Columella edentula, common name the "toothless column snail", is a species of very small, air-breathing land snail, a terrestrial pulmonate gastropod mollusk or micromollusk in the family Vertiginidae.

Columella edentula
Six shells of Columella edentula, scale bar in mm
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Heterobranchia
clade Euthyneura
clade Panpulmonata
clade Eupulmonata
clade Stylommatophora
clade Orthurethra
Superfamily:
Pupilloidea
Family:
Vertiginidae
Subfamily:
Vertigininae
Tribe:
Truncatellinini
Genus:
Columella
Species:
C. edentula
Binomial name
Columella edentula
(Draparnaud, 1805)[1]

Description

The 2.5-3 (-3.5) mm. shell is cylindrical with a conical apex and yellow-brown to brown. The aperture is without teeth and the simple lip is thin. The shell has (4.5 )5-6 (-7) whorls. The last whorl has the largest diameter. The apex is more pointed than in Columella columella. It is narrower and taller than the shell of the similar Columella aspera. The shell sculpture is more irregular and finer than that of C. aspera.

Details of the shell of Columella edentula

Distribution

This species occurs in countries and islands including:

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References
  1. Draparnaud, J.-P.-R. 1805. Histoire naturelle des mollusques terrestres et fluviatiles de la France. Ouvrage posthume. Avec XIII planches. - pp. [1-9], j-viij [= 1-8], 1-134, [Pl. 1-13]. Paris, Montpellier. (Plassan, Renaud).
  2. Balashov I. & Gural-Sverlova N. 2012. An annotated checklist of the terrestrial molluscs of Ukraine. Journal of Conchology. 41 (1): 91-109.


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