Invertebrates
Click Beetle
Elateridae · also called click beetles, skipjack
Flip a click beetle onto its back and it doesn’t simply struggle helplessly. A sharp, audible click later, a spring-loaded hinge in its thorax launches the insect into the air, often landing right-side up as if nothing happened at all.
Overview
The click beetle, family Elateridae, is a widespread beetle group found across forest and grassland habitat worldwide, known for a distinctive spring-loaded righting mechanism. Certain tropical species have adapted a version of this same mechanism’s biology into a genuine source of bioluminescent light.
A trick for righting and running
The click beetle’s signature snap serves double duty, flipping a stranded beetle back onto its feet while doubling as a sudden, disorienting escape jump whenever a predator gets too close for comfort.
Status
Least Concern — widespread and stable across suitable habitat worldwide, though wireworm larvae can be locally significant agricultural pests.
Click Beetle: common questions
How does a click beetle flip itself back over?
A click beetle stuck on its back can snap a specialised spinal hinge between its thorax segments, launching itself into the air with an audible clicking sound, and this sudden motion often flips the beetle right-side up in mid-air or upon landing, allowing it to escape a vulnerable upside-down position.
Are click beetles related to fireflies?
Only distantly; certain tropical click beetle species possess bioluminescent light-producing organs and use a broadly similar biological mechanism to fireflies to produce a visible glow, but click beetles belong to a separate beetle family, meaning the shared ability to glow evolved independently in each group.
Why are click beetle larvae considered agricultural pests?
Click beetle larvae, commonly called wireworms, have a hard, elongated, cylindrical body shape and feed on the roots and underground portions of various crop plants, making them a significant agricultural pest in some regions where large wireworm populations can noticeably damage root crops.
What is the purpose of the click beetle's clicking jump?
Beyond simply flipping itself upright when stuck on its back, a click beetle's sudden clicking jump can also serve as a startling escape response, launching the beetle unpredictably away from a predator that has disturbed it, giving the beetle a chance to escape while the predator is momentarily startled.