Movie 1.

Hunting sequences of pixie robber flies and damselflies to real fruit flies. The digitised positions of the thorax (point) and abdomen (line) are overimposed to the current frame every 40 ms and only past positions of the thorax are kept for the entire sequence. The thorax and abdomen are colour-coded according to the behavioural phase classification, assessment (yellow) or attack (green). Videos were recorded at 1000 frames per second and shown at 50 frames per second.