Despite the name it bears, this type of bug is no jewel at all. They eat cockroaches for breakfast. Literally. Armed with mechanisms that allow them to paralyze their prey, it injects venom into the roach’s head, preventing it from trying to walk. The wasp then turns it into a zombie nursery, by laying its eggs into its abdomen. Yikes. These type of jewels are ones thieves would never think of stealing.