Long-horned Black Legionnaire - Beris geniculata


    Like all flies in the Beris genus, this species has six spines at the base of the scutellum. B. geniculata has a black, or dark, abdomen and dark legs with yellow 'knees'.

    Similar Species

    There are 6 British species in the Beris genus and these can usually be distinguished by the combination of abdomen and leg colours. See our ID Guide to Beris species.

    Identification difficulty
    ID guidance
    • 6 spines at the base of the scutellum
    • black/dark abdomen
    • dark legs with yellow 'knees'
    Recording advice

    Unless identified by a recognised expert, a photo is required. If the photo doesn't show the key ID features then in the comments box describe the size and identifying characters you have observed.


    Woodland and often near water.

    UK Status

    Quite common and widespread in Britain.

    VC55 Status

    Fairly frequent in Leicestershire and Rutland.

    Leicestershire & Rutland Map

    MAP KEY:

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

    UK Map