Helophilus pendulous.

Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Diptera
Family: Syrphidae
Genus: Helophilus
Species: H. pendulus

This is a very common species in the UK, where it is the commonest Helophilus species. The scientific name means "dangling swamp-lover".

Found around muddy pools and ditches. Most specimens can be identified by having at least the basal half (usually all except the distal third) the hind tibia pale yellow.

Flight period April - October.