At rest, a damselfly folds its wings together at an upward angle above the back, while a dragonfly holds its two pairs of wings out from the body like a fixed-winged aircraft. Both are predators ...

If you’ve ever watched a dragonfly zig and zag over a pond in search of dinner, you know how fast these gauzy-winged insects can move. In less than half the time it takes a human eye to blink, a ...