The bullet ant is supposed to have the most painful sting of all insects.

There is an Amazonian tribe whose manhood ritual involves putting on two mittens with live bullet ants sewn into them and withstanding the pain for 5-10 minutes. Over and over again.

Afterward, the boy’s hand and part of his arm are temporarily paralyzed because of the ant venom, and he may shake uncontrollably for days. The only “protection” provided is a coating of charcoal on the hands, supposedly to confuse the ants and inhibit their stinging. To fully complete the initiation, a boy or man must go through the ordeal 20 times over the course of several months or even years.

But I don’t think there’s any insect that can actually kill you with their venom unless you have an allergy or it’s a giant swarm.