Rod Williams / Parasitic fly (Conops quadrifasciatus) parasite of Red-tailed Bumblebee Brockley cemetery, Lewisham, South East London, England, UK, August.

Alan Williams / Thick-headed fly (Conops quadrifasciatus) resting on leaf at woodland edge Cheshire, UK, July

Nick Upton / Yellow banded conops flies (Conops quadrifasciatus) pair, mating on a scabious flowerhead in a garden, Wiltshire, UK. July.