The Jewel wasp is also known as the Emerald Cockroach Wasp and is a parasite. The jewel wasps hunts for cockroaches to feed her young. When the female jewel wasp finds a cockroach, she stings it in a position were it paralyzes the cockroaches front legs. With the cockroach under more control, the jewel wasp gives a second sting in a more precise location into the brain of the cockroach.The second sting that is to the brain controls the cockroaches escape reflex. With this second sting, the jewel wasps has stopped the cockroaches natural escape response to a predator.
The jewel wasp is to small and week to carry the cockroach so instead, the jewel wasp pulls one of the cockroaches antennae, leading it to the jewel wasps burrow. Once the jewel wasp has the cockroach in the nest, the jewel wasp will lay an egg on the cockroaches abdomen. The jewel wasp will then close the entrance to the cockroach and the egg with pebbles. This is not to keep the Cockroach in but to keep predators out.