Ribbed Grass Snail - Vallonia costata
Description
2.2mm - 2.7mm.Trumpet-like and thickened mouth which is large and circular. The shell is strongly and evenly ribbed. The shell is pale and opaque.
Similar Species
Vallonia pulchella and V. excentrica are of similar size with a large round mouth but both lack the ribbed shell.
Identification difficulty

ID guidance
- around 2.5mm
- round mouth
- ribbed shell
Habitat
Dry calcareous grassland, rocks and walls.
When to see it
All year.
UK Status
Reasonably common and widespread in the south-east of England particularly.
VC55 Status
Uncommon but under-recorded.
Leicestershire & Rutland Map
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MAP KEY:
Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015