Sicus ferrugineus (Linnaeus 1761) Length 8mm to 13mm
Known as “A Thick-Headed fly” belonging to the Conopidae family.
Closely related to hoverflies, regarding certain anatomical features.
Flight time May to September.
Widespread throughout the United Kingdom and Europe.

Feeds on nectar and pollen of a wide range of flowering plants and shrubs, favourites include the
genus Cirsium (known commonly as thistles) and also the genus Rubus. (flowering plants in the rose
family, including the more common Raspberries, Blackberries and Dewberries).
The larvae are endoparasites and they pupate and overwinter in their hosts, main hosts being bumble
Bees and some wasp species.