What insect has the most powerful venom?

The jack jumper ant of Australia. One sting can kill. Its the most venomous sting in the insect world. The stingray also has a venomous sting, but it must hit a vital organ to kill, as with the case of Steve Irvin, of the crocidile hunter fame. The man of war has the most venomous sting of the jellyfish species.