02/07/2026
A Wasp That Performs Brain Surgery
The emerald jewel wasp (Ampulex compressa) hunts a cockroach far larger than itself — and wins with chemistry, not strength. The first sting briefly paralyzes the front legs. The second is precise neurosurgery: a stinger driven into the roach's brain, delivering venom that blocks the escape reflex. The roach stays alive and able to walk, but it will never flee again. The wasp then grips an antenna and leads the docile "zombie" into a burrow, seals it in with a single egg, and the hatching larva slowly consumes the still-living roach from the inside. The roach never fights back.