Description: Shell a very low, depressed cone of up to 6 whorls with very wide and deep umbilicus. Pale brown with distinctive darker red-brown radial stripes. Surface marked by regular, strong radial ribs. Mouth oval, periphery shouldered. Very common. 6-7 mm wide.

World Distribution: Found across northern and central Europe to the Mediteranean where it is spreading by human agency Distribution type: European Wide-temperate (63).

Irish Distribution: Probably the commonest shelled mollusc in Ireland, followed closely by Cochlicopa lubrica.

Ecology:

• Ubiquitous in hedgerows or any kind of man-altered terrain and in woods
• Rare on nutrient poor (dystrophic) soils and rocks
• Nevertheless, sometimes seen in lagg woodland around the edges of raised bog and often on agriculturally enriched former peatlands

Key Identification Features:

• Shell a very depressed, broad cone
• Coloured pale brown with distinctive red-brown radial stripes although these can sometimes be faint or missing
• Surface dull with strong, regular radial ribs
• Shell margin slightly shouldered
• Umbilicus very wide and deep

Red list status:

• Least concern (lc).

Distribution Map from NBN: Discus rotundatus at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Discus rotundatus at iNaturalist World Species Observations database.

GBIF data for Discus rotundatus | Classification: Gastropoda, Stylommatophora, Discidae, Discus

Thumbnails for genus Discus