Elytra enclose a region of humid air next to the abdominal spiracles, thus reducing water loss.
Of economic importance due to destruction of timber, textiles, cereals, fruit crops, root crops, museum specimens etc.
Scavengers and carnivores provide valuable services by disposing of organic matter and other insects.
Rove beetles (family Staphilinidae) and female glow-worms (family Lampyridae) are the only families that do not possess the full eytra.
The Scarab beetles, Family Scarabidae, can support up to 850 times their own weight.
Ant lions (family Myrmeleonidae) get their name from predating on ants as larvae. Larval ant lions position themselves at the bottom of funnel-shaped pits and eat the insects that become trapped.
Neuroptera give off distinctive odours when handled, e.g. Nymphes myrmeleonides smells of musk, and Myodactylus species smell of ants.