Some older/less efficient worker termites will develop 'backpacks' of toxic chemicals that explode when the termite is threatened. They are essentially used as suicide bombers when the colony is being attacked.
8
Flies are deaf.
379
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
The pea aphid insect explodes itself thereby sacrificing its life to protect its relatives from predators.
3
The katydid bug hears through holes in its hind legs!
110