Thaumatomyia notata


    A very tiny (2.5 mm) yellow fly with dark stripes on the thorax. Note this is a tentative identification. Other chloropids, e.g. Chlorops pumilionis have similar markings on head and thorax and for this reason the image is placed in a red box.

    Identification difficulty

    Mainly in flower meadows but sometimes it enters homes in large numbers and for this reason has been nicknamed Yellow Swarming Fly.

    When to see it

    Spring and summer.

    Life History

    Larvae predaceous on aphids.

    UK Status

    Widespread in England and Wales, but difficulties of species identification means that true status is uncertain.

    VC55 Status

    Status in Leicestershire and Rutland is not known.

    Leicestershire & Rutland Map

    MAP KEY:

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

    UK Map