Updated: Aug 13, 2019
The emerald wasp attempts to sting a cockroach. The poison will subdue the cockroach so that the wasp can lay
an egg inside the roach’s body so that its young can eat the roach from inside out. About 2/3 of roaches fight off this attack with a karate chop.
See and read more at https://www.nytimes.com/video/science/100000006213475/the-cockroach-karate-kick-that-fends-off-wasps.html