Helophilus pendulus

Helophilus pendulus is a European hoverfly. Its scientific name means "dangling marsh-lover" (from Greek helo-, "marsh", -phil, "love", Latin pend-, "hang"). It is a very common species in Britain, where it is the commonest Helophilus species. It is found throughout Europe from the Mediterranean to Scandinavia, westward to the Faroe Islands and Iceland, and through eastward through Russia from the Kola Peninsula south to Crimea and across Siberia to the Pacific Ocean.

It also has the common name sun fly, although this is probably based on a mis-reading of helo- as helio-.