Bibio johannis


Length 4 to 7 mm. The black stigma is clear cut, contrasting with costal cell in both sexes. Hairs on abdomen of the male are long and all black, in the female the hairs are short and pale. Antennal flagellum 7-segmented. Body of both sexes black. Female legs are ochreous. Males have black femora but with the hind tibia and tarsi brown. The male hind basitarsus (first segment) is slightly swollen, about three times as long as wide which is diagnostic for this species.

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.

Leicestershire & Rutland Map


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

UK Map

Species profile

Species group:
Craneflies, Gnats & Midges
Records on NatureSpot:
First record:
07/04/2011 (Nicholls, David)
Last record:
29/04/2024 (Nicholls, David)

Total records by month

% of records within its species group

10km squares with records

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