Highly commended Behavioral and Physiological Ecology: Multitasking dance flies (Empididae) by Jeroen Everaars/German Centre for Integrative Biodiversity Research (iDiv), Halle-Jena-Leipzig The male uses only two of its six legs to hold his body and that of the female and her prey. With the other four legs he holds the female which he fertilises. The female, while being held, sucks blood out of a fly to supply her eggs with nutrients. These predatory flies also pollinate flowers. They visit flowers regularly, and you can see pollen on their bodies.

Photograph: Jeroen Everaars/German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig/BMC Ecology Image Competition 2017