Violet Black-legged Robber Fly - Dioctria atricapilla

    Description

    Length: 10-12mm. This is an all blue-black robberfly with bright yellow halteres. It is the only Doctria species with all black legs. Males have prussian blue eyes. The wings are darkened towards the base, particularly in the male. The female has a golden face whereas in the male it is dark brown.

    Habitat

    Around grassland where it usually rests on grass stems and sometimes in woodland rides.

    When to see it

    May to July.

    Life History

    Predatory on small insects, particularly other flies and parasitic hymenopterans.

    UK Status

    Widespread in the southern half of Britain.

    VC55 Status

    Status in Leicestershire and Rutland not known.

    Leicestershire & Rutland Map

    UK Map