Nick Upton / Chalkhill blue (Polyommatus coridon) and Square spot dronefly (Eristalis nemorum) nectaring on Wild marjoram flowers (Origanum vulgare) in a chalk grassland meadow, Wiltshire, England, UK, August.

Nick Upton / Red-tailed bumblebee (Bombus lapidarius) and a Common drone fly (Eristalis tenax) nectaring from Wild marjoram (Origanum vulgare) flowers in a chalk grassland meadow, Wiltshire, England, UK, August.

Rod Williams / Drone fly (Eristalis tenax) a Honey-bee mimic, Brockley Cemetery, Lewisham, London, UK June

Rod Williams / Drone fly (Eristalis tenax) Brockley Cemetery, Lewisham, London, UK. June

Brent Stephenson / Male Common drone fly (Eristalis tenax) on a Variegated / Milk thistle (Silybum marianum) flower, Cape Kidnappers, Hawkes Bay, New Zealand, November.

Alan Williams / Hoverfly (Eristalis pertinax) feeding on Bramble (Rubus fruticosus) flower at edge of woodland Cheshire, England, UK, July.

Alex Hyde / Drone fly (Eristalis tenax) feeding on Ivy flowers (Hedera helix). Surrey, UK. October.

Georgette Douwma / Drone Fly (Eristalis tenax), close up of compound eyes. UK.

Rod Williams / Hoverfly (Eristalis pertinax) on leaf, Brockley cemetery, Lewisham, London, UK, October.

Alex Hyde / Drone fly (Eristalis tenax) feeding on Ivy (Hedera helix) flowers. Peak District National Park, Derbyshire, UK, November.

Rod Williams / Hoverfly (Eristalis pertinax) Hutchinson's Bank, New Addington, South London, England, UK, April

Kim Taylor / Hoverfly / Drone fly (Eristalis tenax) male hovering, searching for females. Surrey, England, April.