Click beetles (coleoptera; Elateridae) are a family of beetles named after the clicking sound they make when jumping to escape a predator, or escape from your hands! To jump they flex their body between the thorax and the abdomen. They can stay locked in this position for a while, storing the energy with a small protuberance of the thorax. If they feel threatened, they can release all that energy in an instant, producing the click sound you can hear in this video.
[ Ссылка ]
