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

Kim Taylor / Brown Trout (Salmo trutta) juvenile jumping through the water surface to take a hoverfly. Surrey, UK.

Andy Sands / Hunting Wasp (Ectemnius cavifrons) female carrying paralysed hoverfly in flight toward tunnel entrance in rotten log. Hertfordshire, England, UK, July.

Kim Taylor / Volucella Hoverfly (Volucella pellucens) feeding on Hogweed (Heracleum sphondylium) flowers. Surrey, UK, June.

Nick Upton / Hoverfly (Myathropa florea), using proboscis to feed on pollen from anthers of Ivy flowers (Hedera helix). Wiltshire garden, UK, September

Wild Wonders of Europe / Geslin / Yellow-legged moustached icon hoverfly (Syrphus ribesii) resting on leaf in the Vatican garden with St Peter's in the background, Rome, Italy, March 2010

Stephen Dalton / Hoverfly (Eristalis tenax) taking off from Snapdragon flower, UK

Stephen Dalton / Dronefly (Eristalis similis) taking off from Snapdragon (Antirrhinum) flower, UK

Stephen Dalton / Hoverfly (Volucella bombylans) feeding on flower. This species is a Bumblebee mimic, UK

Stephen Dalton / Hoverfly (Syrphus ribesii) feeding on (Cynara sp) flower, UK.

Stephen Dalton / Drone fly (Eristalis similis) in flight over summer bedding flowers, England, UK

Wild Wonders of Europe / Geslin / Yellow-legged moustached icon hoverfly (Syrphus ribesii) on leaf in garden of Vatican City, Rome, Italy, March 2010

Stephen Dalton / Hoverfly (Eristalis tenax) flying into spider's web, UK

Kim Taylor / Jumping spider (Phidippus clarus) pouncing on a hoverfly (digitally enhanced). North America.

Kim Taylor / Jumping Spider (Phidippus clarus) pouncing on a hoverfly. Digital composite, UK.

Kim Taylor / Male hoverfly hovering {Eristalis sp.} Europe.

David Kjaer / Hoverfly at flower, England

Konrad Wothe / Hoverfly collecting nectar in a field of Marguerites (Leucanthemum vulgare), Germany

Nick Upton / Meadow Eupeodes hoverfly / Meadow field syrph (Eupeodes latifasciatus) nectaring on a Meadow buttercup (Ranunculus acris) flower, Wiltshire, UK. June.

Nick Upton / Golden-tailed leafwalker hoverfly (Xylota sylvarum) resting on a leaf close in a garden, Wiltshire, UK. July.

Nick Upton / Hoverfly / Sun fly (Helophilus trivittatus) nectaring on Michaelmas daisy (Aster x salignus) flowers, Kenfig National Nature Reserve, Glamorgan, Wales, UK, September.

Nick Upton / Large female Wasp hoverfly (Chrysotoxum cautum) resting on a grass stem in scrubland, Kenfig National Nature Reserve, Glamorgan, Wales, UK, June.

Nick Upton / Hoverfly / Drone fly (Eristalis tenax) nectaring on Michaelmas daisy (Aster x salignus) flower, Kenfig National Nature Reserve, Glamorgan, Wales, UK, September.

Robin Chittenden / Tiger hoverfly pair (Helophilus pendulus) mating on grass blade, Norfolk, UK. September.

Robin Chittenden / Hornet mimic hoverfly (Volucella zonaria) nectaring on wildflowers, Strumpshaw Fen, Norfolk, UK. August.

Chris Mattison / Hoverfly (Leucozona lucorum) resting on a leaf, Monmouthshire, Wales, UK. May.

Paul Harcourt Davies / Hoverfly (Falennia fasciata) resting on a plant stem, Orvieto, Italy. June.

Heather Angel / Marmalade hoverflies (Episyrphus balteatus), feeding on pollen from Regal lily (Lilium regale) picking up pollen on their legs, UK. July.

Philippe Clement / Female Tapered drone fly / Dronefly (Eristalis pertinax) pollinating and feeding on nectar from Hemp-agrimony (Eupatorium cannabinum) flower, Belgium. August.

Philippe Clement / Male Hornet mimic hoverfly (Volucella zonaria) pollinating Hemp-agrimony (Eupatorium cannabinum) flower in summer, Belgium. August.

Philippe Clement / Female European hoverfly (Helophilus pendulus) pollinating Tansy (Tanacetum vulgare) in flower, Belgium. August.

Philippe Clement / Female European hoverfly (Helophilus pendulus) pollinating Tansy (Tanacetum vulgare) in flower, Belgium. August.

Doug Wechsler / Hover fly (Syrphidae sp.) larvae feeding on aphids (Uroleucon sp.), Philadelphia, Pennsylvania, USA. June.

Doug Wechsler / Carolinian elegant fly (Meromacrus acutus), wasp-mimic, on leaf, Philadelphia, Pennsylvania, USA. June.

Doug Wechsler / Hover Fly (Mallota bautias) feeding on carcass of nestling turkey vulture, Montgomery County, Pennsylvania, USA. June.

Doug Wechsler / Syrphid fly (Chalcosyrphus piger) rubbing its back legs together on log, Montgomery County, Pennsylvania, USA. June.

Doug Wechsler / Hover Fly (Syrphidae sp.) larvae feeding on aphid (Uroleucon sp.), Philadelphia, Pennsylvania, USA. June.

Doug Wechsler / Wasp-mimicking hover fly (Temnostoma trifasciatum) on wood, Montgomery County, Pennsylvania, USA. June.

John Waters / Hoverfly (probably Helophilus trivittatus) on Bramble flower (Rubus fruticosus), Shapwick Heath NNR, Somerset, UK, June.

Chris Mattison / Large hoverfly (Sericomyia lappona) covered in pollen, resting on leaf, Cumbria, England, UK.

Chris Mattison / Hoverfly (Syrphus ribesii) male, a wasp mimic, resting on leaf with small bugs.

Rod Williams / Hoverfly. (Scaeva pyrastri) female feeding on Knapweed. Sutcliffe Park Nature Reserve, Eltham, London, England, UK. June.

Rod Williams / Hoverfly (Parhelophilus Sp) female, feeding on cow parsley Sutcliffe Park Nature Reserve,Eltham, London, England, UK. June

Claudio Contreras / Hoverfly (Syrphidae) flying towards a Guadalupe Island white sage (Senecio palmeri) flower, Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, March