Emanuele Biggi / Fungus gnat (Mycetophilidae) larvae, with sticky hanging threads, waiting to ambush small flying insects. Deer caves, Gunung Mulu National Park, Borneo, Sarawak, Malaysia.

Emanuele Biggi / Fungus gnat (Mycetophilidae) larvae, with sticky hanging threads, waiting to ambush small flying insects. Deer caves, Gunung Mulu National Park, Borneo, Sarawak, Malaysia.

Emanuele Biggi / Sticky hanging traps of the fungus gnat (Mycetophilidae). Deer cave, Gunung Mulu National Park. Borneo, Sarawak, Malaysia.

Emanuele Biggi / Fungus gnat (Mycetophilidae) larvae, with sticky hanging threads, waiting to ambush small flying insects. Deer caves, Gunung Mulu National Park, Borneo, Sarawak, Malaysia.

Emanuele Biggi / Fungus gnat (Mycetophilidae) larvae, with sticky hanging threads, waiting to ambush small flying insects. Deer caves, Gunung Mulu National Park, Borneo, Sarawak, Malaysia.

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.

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

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