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

Rod Williams / Hoverfly (Helophilus pendulus) feeding on yarrow, Brockley Cemetery, Lewisham, England, September

Rod Williams / Sunfly hoverfly (Helophilus pendulus), feeding on charlock, Sutcliffe Park Nature Reserve, Eltham, London, England, May

Rod Williams / Sunfly hoverfly (Helophilus pendulus) feeding on charlock, Sutcliffe Park Nature Reserve, Eltham, London, England, UK. May. Medium repro only

Rod Williams / Sunfly hoverfly (Helophilus pendulus) feeding on Green alkanet (Pentaglottis sempervirens) Beverley Court Gardens, Lewisham, London, England, UK. April.

Stephen Dalton / Hoverfly (Helophilus pendulus) taking-off, Rookery Wood, Sussex, England, UK, August.

Alex Hyde / Hoverfly (Helophilus pendulus) feeding on Hemp agrimony (Eupatorium cannabinum) Strumpshaw Fen, Norfolk, UK, September.

Colin Varndell / Hoverfly (Helophilus pendulus) on leaf, Dorset, UK, July.

Nick Upton / Sunfly (Helophilus trivittatus) nectaring on Common comfrey flowers (Symphytum officinale) in a patch planted by the Bumblebee Conservation Trust on farmland, Romney Marshes, Suffolk, UK, June.

Rod Williams / Hoverfly (Helophilus pendulus) feeding on Field bindweed (Convolvulus arvensis) Brockley Cemetery, Lewisham, London UK August

Rod Williams / Sun hoverfly (Helophilus pendulus) on Common ragwort (Senecio jacobaea) Brockley Cemetery, Lewisham, London UK August

Alan Williams / Hoverfly (Helophilus pendulus) feeding on Bramble (Rubus fruticosus) at edge of woodland, Cheshire, UK, July

Morley Read / Parrot snake (Leptophis ahaetulla), with a fly on its head, enters its mouth, Amazon rainforest, Orellana Province, Ecuador. (non-ex)

Bernard Castelein / Snakefly (Phaeostigma notata) Groot Schietveld, Belgium. May

Lucas Bustamante / Ecuadorian toadhead (Bothrocophias campbelli) with Mosquito (Culicidae) feeding on its head, Mindo, Pichincha, Ecuador.

Lucas Bustamante / Chocoan parrot snake (Leptophis bocourti) on heliconia flower with fly in background, Sarapiqui, Heredia, Costa Rica.

Michael & Patricia Fogden / Banded King Shoemaker (Prepona demophon) catterpillar anterior body expanded to expose false eye spots and mimic snake, note eggs of parasitic Tachinid fly, rainforest, Costa Rica

Paul Harcourt Davies / Snake fly (Phaeostigma notata) female, resting on flowerhead, Sibillini, Umbria, Italy. May.

Bert Willaert / Portrait of a Bismarck Ringed python (Bothrochilus boa) with fly, Willaumez Peninsula, New Britain, Papua New Guinea, December

Andy Sands / Snakefly (Raphidia notata) on leaf in garden, Hertfordshire, England, UK, June - Focus Stacked