British Vertigos » Family: Vertiginidae » Direction of coiling » Is the mouth lip thickened? » Truncatellina or Vertigo? » Separating Vertigo genesii » Separating by size » Separating V. substriata » Separating V. antivertigo » Separating V. pygmaea
Separating Vertigo pygmaea
Vertigo pygmaea (Draparnaud, 1801)
Description: Aperture with 4 - 7 prominent teeth (1 parietal only),usually linked by callus around the bases :externally there is a strong pale transverse crest a little before the aperture. Mouth edge slightly thickened, not strongly reflected. Shell pale brown with a characterisic sculpture of very fine, regular ribbing.
Habitat: Dry calcareous grassy places; also in sand dunes. Not usually found in woods.
Aperture with 4 - 5 narrow peg-like delicate teeth: no pale crest before the aperture.
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