1. Static antennae act as locomotory guides that compensate for visual motion blur in a diurnal, keen-eyed predator by Daniel B. Zurek, and Cole Gilbert Proceedings B Volume 281(1779):20133072 March 22, 2014 ©2014 by The Royal Society

2. Antennal positions during two-step cycles in running tiger beetles (note different timescales in (a) and (b)). Daniel B. Zurek, and Cole Gilbert Proc. R. Soc. B 2014;281:20133072 ©2014 by The Royal Society

3. Outcomes of obstacle runs (means ± s.d., Ncontrol = 20 beetles, other groups N = 5 beetles; 10 runs per obstacle height for each beetle). ‘Success’ means surmounting of the obstacle without any part of the head coming into contact. ‘Failure’ means that the... Daniel B. Zurek, and Cole Gilbert Proc. R. Soc. B 2014;281:20133072 ©2014 by The Royal Society

4. Velocity, pitch angle and ground clearance of beetles during runs on flat ground, before and after covering eyes or clipping antennae (mean ± s.d. control: N = 20 beetles, n = 225 runs; blind: N = 5, n = 46; clipped: N = 10, n = 75); (a,b) treatments had no... Daniel B. Zurek, and Cole Gilbert Proc. R. Soc. B 2014;281:20133072 ©2014 by The Royal Society

5. (a–c) Pitch angle and (d–f) ground clearance as function of distance to the ‘high’ obstacle (4 mm). Daniel B. Zurek, and Cole Gilbert Proc. R. Soc. B 2014;281:20133072 ©2014 by The Royal Society