Fig. 5.

A high-speed image sequence of an escape jump using jaw propulsion in response to the presence of a larger heterospecific competitor (O. erythrocephalis) in the filming arena. Shown starting in the top-right image, the ant indicated by an arrow directs and fires its cocked mandibles against the substrate. The ant is propelled upward through the air toward the left of the page. The ant descends to the left of the page in the second half of the trajectory. Images are shown at 13.3-ms intervals (see Movies 3 and 5). (Scale bar: 1 cm.)