Pal Hermansen / Hoverfly in flight, backlight, Norway, September.

Phil Savoie / Rhino snout hoverfly (Rhingia campestris) flying to Lungwort (Pulmonaria officinalis), Monmouthshire, Wales, UK, April.

Phil Savoie / Rhino snout hoverfly (Rhingia campestris) on Grape hyacinth (Muscari sp) Monmouthshire, Wales, UK. April.

Phil Savoie / Common dronefly (Eristalis tenax), feeding on Ox-eye daisy (Leucanthemum vulgare), Monmouthshire, Wales, UK. May

Alan Williams / Hoverfly (Volucella bombylans), bumblebee mimic nectaring on Thistle (Cirsium sp) flower. North Wales, UK. June.

Alan Williams / Hoverfly (Helophilus trivittatus) pair mating on Ox-eye daisy (Leucanthemum vulgare) flower. Cheshire, England, UK. June.

Nigel Cattlin / Drone fly (Eristalis tenax), a bee mimic, on leaf. England, UK.

Heather Angel / Drone fly (Eristalis tenax) nectaring on Snowdrop (Galanthus nivalis), pollen on body. Surrey, England, UK. February.

Heather Angel / Marmalade hoverfly (Episyrphus balteatus) feeding on pollen on fallen Southern magnolia (Magnolia grandiflora) stamens. Surrey, England, UK. July.

Heather Angel / Marmalade hoverflies (Episyrphus balteatus), two feeding on pollen of Dwarf formosa lily (Lilium formosanum var. pricei). Surrey, England, UK. July.

Heather Angel / Marmalade hoverfly (Episyrphus balteatus) in flight with pollen on feet, foraging on Sargents lily (Lilium sargentiae). Deposited pollen visible on stigma. Cultivated in garden, Surrey, England, UK. J...

Heather Angel / Dead head hoverfly (Myathropa florea) and Leaf cutter bee (Megachile centuncularis) female feeding on Californian tree poppy (Romneya coulteri) pollen. Bee transferring pollen from abdomen to stigma....