The male is all black and slightly smaller than the female which has an orange abdomen and red thorax. Wing length to 9.5 mm.
Bibio anglicus is very similar, though slightly smaller. However it is found in the Spring and not usually seen after May. It also lacks the white hairs seen on the lateral edge of the thorax in B. hortulanus.
Flower meadows and flowering crops, hedgerows, woodland margins etc.
May and June.
B. hortulanus is mostly recorded from southeast Britain and seems to be locally common in East Anglia. It may favour calcareous soils. It can be abundant on Rape flowers alongside B. marci.
Little recorded in Leicestershire and Rutland.
Leicestershire & Rutland Map
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Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015