Marie Read / Ruby-throated Hummingbird (Archilocus colubris), male flying in to feed from cardinal flowers (Lobelia cardinalis) New York, USA. August.

Jeff Vanuga / Ephydrid flies (Ephydra sp) that eat microscopic algae and survives during the winter in thermal pools. Biscut Basin, Yellowstone National Park, Wyoming, USA, January.

Alex Hyde / Horsefly (Philipomyia aprica) Aosta Valley, Monte Rosa Massif, Pennine Alps, Italy. July.

Andy Trowbridge / Split level shot of a fly fisherman (Murray Trowbridge) releasing a large brown trout (Salmo trutta) in a gin clear 'backcountry' river, North Canterbury South Island, New Zealand. January, 2012. Mode...

MYN / Piotr Naskrecki / Long legged fly (Condylostylus sp) portrait, Concord, Massachusetts, USA, June. meetyourneighbours.net project

Alex Hyde / Close-up of compound eyes of unidentified fly {Diptera}. Masoala Peninsula National Park, north east Madagascar.

Stephen Dalton / Venus flytrap (Dionaea muscipula) with fly trapped

Stephen Dalton / Common house fly {Musca domestica} killed by fly-zapping machine, attracted to the ultra violet light, UK

Pete Oxford / Flap necked chameleon catching fly with tongue, Africa

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

Cyril Ruoso / Green blowfly (Lucilia sericata) on Prunus (Prunus sp) blossom. Bourgogne-Franche-Comte, France. April.

Heather Angel / Brazilian Dutchman's pipe flower (Aristolochia gigantea) with green inflated pouch. Flower smells of carrion to attract fly pollinators. Cultivated in glasshouse, Surrey, England, UK. Native to Br...