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
Placing alcohol on a scorpion's back will make it go crazy and fatally sting itself.
1k
The Jewel Wasp injects a drug into a cockroach’s brain, turns it into a zombie, rides it like a horse back to its burrow, and then lets its hatched larvae feed on the cockroaches body from the inside.
6
The pea aphid insect explodes itself thereby sacrificing its life to protect its relatives from predators.
3
When dragonflies mate, their tails form a love heart.
22
Worker bees must visit around 4,000 flowers in order to make one tablespoon of honey.
5