Discus rotundatus

Family

Discidae

Species

Discus rotundatus (Muller, 1774)

Common Name

Rotund disc

Description

The rotund disc snail is very small. It is approximately 2.5 mm in height and ranges in width from 5.5-7.2 mm, with about 4.5-6 whorls. This flattened shell is almost disc-shaped and can either be grey or light yellow-brown in color, with prominent uniformly arranged reddish brown blemishes. The body of the animal is blue-grey or blue-black, but pale on the sides of the foot.

Native Range

Western and Central Europe

Distribution

North America:

  • U.S.: California, New Jersey, New York, Massachusetts, Washington State
  • Canada

Atlantic Islands

Europe: Southern Scandinavia, Northern Scotland to Algeria, Spain, Ireland to Ukraine, Turkey, Denmark, Norway

Ecology

This snail inhabits forests, greenhouses, wasteland and gardens. They often lay fewer than 5 eggs per clutch.

Synonyms

  • Helix rotundatus Muller, 1774

References

Anderson 2005; Grimm et al. 2009; Forsyth 2004; Horsak 2004; Kerney et al. 1979

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