Bibio johannis


Length 4 to 7 mm. A black fly with shiny black thorax. The head and legs are both very hairy. The male has a very prominent dark stigma in each wing, and the lower parts of the legs are orange.

Identification difficulty

Grassland and well vegetated areas and hedgerows and also over water.

When to see it

March to June.

Life History

Breeds in soil and sometimes seen in swarms.

UK Status

Fairly frequent and widespread in England and Wales.

VC55 Status

Fairly frequent in Leicestershire and Rutland.

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Leicestershire & Rutland Map


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

UK Map