Thistle Gall Fly - Urophora cardui

    Alternative names
    Thistle Gall

    A small but striking fly. The male's wings have darker markings.

    Identification difficulty

    Adult Gall


    Grasslands etc. where Creeping Thistle is present.

    When to see it

    It flies from May to August/September.

    Life History

    It lays its eggs on Creeping Thistle (Cirsium arvense). After hatching, the larvae burrow into the stem of the plant and form a gall (or swelling).

    UK Status

    Widespread in the south of England.

    VC55 Status

    Fairly common in Leicestershire and Rutland

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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