Warum müssen Insekten in der Wüste so schnell rennen?
They run fast during the day to get from one place to another where they are seeking in order (water > food > sex). in the desert these are few and far between and thus they run to partition their time more efficiently at their destination. Also, insects tend to run in alternating tripods so that at each step three feet are down and momentarily stable. By alternating they then have less time spent with each tripod on the ground and thus cool off the other tripod in-between steps.
Night foraging insects in the desert travel much slower since they do not have the sun's heat beating down upon them. Many desert animals forage at night.