North Australian FISH FINDER TM forums

The stuff you find on the internet ... http://explodingants.com/

"The minor workers of this species have large sacs extending from their mandibular glands (in the head) throughout the whole body. They are filled with a sticky and toxic defensive secretion. When the ants are attacked by enemy insects, they will attach themselves to the opponent by biting a leg or antenna and then “explode” by contracting their muscles until the gaster (backside of body) ruptures. This releases the liquid onto the enemy, who is then immobilized or killed – and also kills the exploded ant."

It's a good thing we don't have exploding humans.

Oh, hang on ...