Anisostephus betulinus

    Description

    The larvae of the gall midge Anisostephus betulinus cause galls to form on the leaves of Birch (Betula species). The galls take the form of a deep, circular blister about 3 mm across, 1.5 mm deep, yellowish to red-purple in colour, in the leaf blade or over veins and more prominent on the upper surface.

    Habitat

    Wherever the host Birch species occur.

    When to see it

    When Birch is in leaf.

    Life History

    The larvae leave the galls from July to September.

    UK Status

    It is difficult to determine the status in Britain due to lack of records.

    VC55 Status

    Status in Leicestershire and Rutland not known.

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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