Ribbed Grass Snail - Vallonia costata
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.
Vallonia pulchella and V. excentrica are of similar size with a large round mouth but both lack the ribbed shell.
- around 2.5mm
- round mouth
- ribbed shell
Dry calcareous grassland, rocks and walls.
All year.
Reasonably common and widespread in the south-east of England particularly.
Uncommon but under-recorded.
Steve Woodward
Plungar Churchyard
29 October 2017
David Nicholls
Watermead South
29 January 2024
Steve Woodward
Plungar Churchyard
29 October 2017
David Nicholls
Bloody Oaks Quarry
04 August 2018
David Nicholls
Bloody Oaks Quarry
04 August 2018
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Species profile
- Common names
- Ribbed Grass Snail
- Species group:
- Slugs & Snails
- Kingdom:
- Animalia
- Order:
- Pulmonata
- Family:
- Valloniidae
- Records on NatureSpot:
- 24
- First record:
- 04/03/1980 (Rundle, Adrian)
- Last record:
- 29/01/2024 (Nicholls, David)
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% of records within its species group
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