This seemingly harmless looking parasite, called the Jewel Wasp, actually has a very creepy birthing ritual. It will poison and paralyze a cockroach with a few quick stings, and drag it into a burrow. Once it's there, the wasp will lay an egg on the wasp, and the egg will develop inside the roach!
The wasp mostly lives in the tropical regions of South Asia, Africa and the Pacific Islands. The weird reproductive method doesn't end there, however. The wasp will sting a cockroach twice. The first sting will paralyze the cockroach so it can't defend itself.The second sting turns the roach into a zombie, basically, as the cockroach is unable to walk spontaneously or of its own will.
The eggs hatch about 3 days after the sting. Then, the larva feed for 4-5 days on the roach. Mind you, the roach is still alive. In fact the larva will strategically eat the roach's internal organs to maximize the chances that the roach stays alive until the larva can develop into a cocoon!