The fastest flying insect would be the Southern Giant Darner. In a rough field estimate records it flying at 60 miles per hour. However a more reliable text clocks it at 35 miles per hour. As for the ground insect the Australian Tiger Beetle takes the crown at 5.6 miles per hour. One common misconception is that the American Cockroach is the fastest but it falls well short with a speed of just 2.4 miles per hour.