Dogwood Rivet Midge - Craneiobia corni


    The larvae of the midge Craneiobia corni cause galls on the leaves of Dogwood (Cornus sanguinea) and possibly on other Cornus species. The galls are flask shaped and obvious on both sides of the leaf, they are domed above, 3 to 5 mm across protruding below from midrib or side vein 8 to 10 mm, often several on a leaf. The galls are greenish yellow, often tinged pink or purple.

    Identification difficulty

    Adult Gall


    Wherever Dogwood occurs.

    When to see it

    July to September.

    UK Status

    Not well recorded but thought to be locally frequent in Britain.

    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