Nick Upton / Shore hoverfly (Eristalinus aeneus), sunning on a sandy bank near an estuary, Poole Harbour, Arne, Dorset, UK, July.

Nick Upton / Shore hoverfly (Eristalinus aeneus), sunning on a sandy bank near an estuary, Poole Harbour, Arne, Dorset, UK, July.

Andy Sands / Hoverfly (Eristalinus sepulchralis) seen here taking nectar from the flowers of Fleabane, Oxfordshire, England, UK, August

Pascal Pittorino / Band-eyed frone fly (Eristalinus taeniops) feeding on Euryops flower (Euryops pectinatus) in a garden. Provence, France, November

Pascal Pittorino / Band-eyed Drone fly (Eristalinus taeniops) feeding on Euryops flower (Euryops pectinatus) in a garden. Provence, France, November

Pascal Pittorino / Band-eyed Drone fly (Eristalinus taeniops) feeding on Euryops flower (Euryops pectinatus) in a garden. Provence, France, November

MYN / Gil Wizen / Band-eyed drone fly (Eristalinus taeniops), Central Coastal Plain, Israel, June. Focus-stacked and cropped. meetyourneighbours.net project

Michael Durham / African hover / Band-eyed drone fly (Eristalinus taeniops) in flight, near Bulawayo, Zimbabwe, November.

Michael Durham / African hover / Band-eyed drone fly (Eristalinus taeniops) in flight, near Bulawayo, Zimbabwe, November.

Michael Durham / Band-eyed Drone Fly (Eristalinus taeniops) flying near Bulawayo, Zimbabwe

Nick Upton / Band-eyed Drone Fly (Eristalinus taeniops) feeding on Variegated Spurge (Euphorbia marginata) flowers. Lesbos / Lesvos, Greece, August.

Premaphotos / Black drone fly, a hover fly (Eristalinus sepulchralis) mating pair on a Dandelion flower, UK