Pegomya solennis

    Description

    Pegomya solennis is a small blackish fly whose larvae mine the leaves of various members of the Dock family causing large blotch mines.

    Identification difficulty
    Habitat

    Around dock plants.

    When to see it

    The mines can be seen when dock is in leaf.

    Life History

    The emerging larvae initially work shoulder to shoulder in making a broad corridor. Later they split up, making a large blotch that often is enlarged even more by fusion with other mines. The mine is practically full depth. Frass blackish-green, often deliquescent. The larvae can leave a mine and restart elsewhere. Pupation outside the mine.

    UK Status

    Fairly frequent and widespread in England and Wales.

    VC55 Status

    Fairly frequent in Leicestershire and Rutland.

    Leicestershire & Rutland Map

    UK Map