Jewel Wasp Precision

The emerald jewel wasp does something closer to surgery. It stings a cockroach twice: once in the chest to briefly stun the front legs, then a second, aimed sting into two precise spots in the brain. That second jab switches off the escape reflex while leaving every other movement working.

The roach can still walk, groom, and eat — it just can't run or fight back. The wasp grabs an antenna and walks it to a burrow like a dog on a leash, lays an egg on its leg, and seals it in. The larva eats the still-living roach from the inside, and unusually for a parasitoid it tears into the heart and breathing tubes first — wrecking the vital organs early to fuel a fast, frantic feed.