Wild Wonders of Europe / D'Amicis / Young male Red deer (Cervus elaphus) walking on snow field to get rid of flies, Western Tatras, Carpathian Mountains, Slovakia, June 2009

Andy Sands / Twin lobed deer-fly (Chrysops relictus) biting the arm of a man, Surrey, England, UK. June

Pal Hermansen / Moose (Alces alces) close up of legs with insects flying round them, Lahkso National Park, Glomfjellet, Norway, July.

John Abbott / Deer Fly (Chrysops excitans) female, on white background, Fairbanks North Star Borough, Alaska, USA.

Bryan and Cherry Alexander / Purple sandpiper (Calidris maritima) catching the flies around body of a white bull Reindeer (Rangifer tarandus) that died during the winter in Adventdalen, Svalbard, Norway.

Jussi Murtosaari / Deer fly (Lipoptena cervi) on human skin, South Karelia, southern Finland, September.

Kim Taylor / Golden eyed horse fly (Chrysops quadratus) female on acorn, Surrey, England, August

Nick Upton / Deer Botfly / Nasal Botfly (Cephenemyia stimulator) male waiting for females on a rock. Mount Vogel, 1800m, Bohinj, Slovenia, July.

Paul Harcourt Davies / Deer / Horsefly (Chrysops relictus) close-up of characteristically reflective eyes, Montecucco, Italy, Europe.

Paul Harcourt Davies / Deer / Horse fly (Chrysops relictus) close-up portrait, on grass stems, Italy, Europe

Nick Upton / Deer fly (Silvius alpinus) with green eyes nectar feeding from flowers, Pyrenees, Spain

Andy Sands / Deer fly (Chrysops quadratus) on fir cone, Captive, UK