Description: Shell dextral. Relatively broad, barrel-shaped, like V. antivertigo. Aperture small and lip thin, unlike that species. Aperture with 4 finer denticles: 1 parietal; 1 columellar; 2 palatal. Shell glossy, mid brown with tumid whorls. Local, lakeshores in the west only. 1.9-2.2 mm.

World Distribution: Found in Denmark, most of Scandinavia and the British Isles. Distribution type: Suboceanic Boreo-temperate (52).

Irish Distribution: This species is very locally distributed in the western half of Ireland on swampy lakeshores. It has recently been found at four sites in south Fermanagh (pers. comm. of G.A. Holyoak) which extends its range into Northern Ireland.

Ecology:

• Appears to be confined to exposed lakeshores on limestone
• Lives in lakeshore flushes or strand-line jetsam
• Often very difficult to locate, even in known localities

Key Identification Features:

• A very small, tumid shell glossy and mid brown in colour
• Aperture small and lip thin without indent
• Four small teeth: 1 parietal; 1 columellar; 2 palatal

Red list status:

• Vulnerable (VU).

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

iNaturalist: Vertigo lilljeborgi at iNaturalist World Species Observations database.

GBIF data for Vertigo lilljeborgi | Classification: Gastropoda, Stylommatophora, Vertiginidae, Vertigo

Thumbnails for genus Vertigo