Ingo Arndt / Mosquito (Culicidae) freshly hatched sitting on water surface with reflection, Germany.

Ingo Arndt / Mosquito (Culicidae) egg faft floating on surface of water, Germany

Stephen Dalton / Horse fly (Tabanus sp) male taking off from poppy seed-head (Papaver rhoeas) Sussex, UK

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

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 / Crane fly / Daddy long legs (Tipula paludosa) female covered in morning dew. Peak DIstrict National Park, Derbyshire, UK. September. Winner of the Hidden Britain Category of the BWPA Awards 2015.

MYN / Gil Wizen / Human botfly (Dermatobia hominis), adult and larva. Cayo District, Belize. Composite image. Meetyourneighbours.net project

Nick Garbutt / Yacare Caiman (Caiman yacare) gaping to regulate its body temperature, with attendant hoverflies, the Paraguay River, Taiama Reserve, western Pantanal, Brazil, South America.

Kim Taylor / Redpoll (Carduelis flammea) male landing on Alder (Alnus glutinosa) Surrey, England. February

Denis-Huot / Lion (Panthera leo) male with bloody mane and flies, Masai-Mara Game Reserve, Kenya

Adrian Davies / Fossilised fly in Baltic amber. Whole specimen approx 15mm long. Fly approx 5mm.

Adrian Davies / Cape Sundew (Drosera capensis) with captured fly. Note how leaf has rolled over the prey.