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.

    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

    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.

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    Leicestershire & Rutland Map

    MAP KEY:

    Yellow squares = NBN records (all known data)
    Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

    UK Map