Sicus ferrugineus Linnaeus, 1761
Common names: Sicus ferrugineux [Fr], Roestbruine kromlijf [Nl], Gemeine Breitstirnblasenkopffliege [De]
Visé, LIEGE ● Belgium
Description: Fly of 8-13 mm length. The body is mainly reddish-brown or yellow-brown.
The head is yellow, quite large and inflated-looking, with a kind of bubble at the front, narrow cheeks and short antennae. The large eyes are reddish. When in resting position the abdomen is usually folded forward.
Biology: Adults feeds on nectar or pollen of various flowering plants. They can be seen from May through to September.
These flies lay their eggs on bumble bees. Their larvae are endoparasites of bumble bees of the genus Bombus.
Habitat: Hedgerows and flower meadows.
Distribution: Western and Northern Europe.