This is why I’m a bio major.
A type of fly called the phorid fly kills fire ants by the strange way they reproduce. First, the female phorid fly injects her egg into the ant with a needle-like appendage. The larva from the egg later travels to the head of the ant and lives there for weeks, eating its brain and causing it to behave like a “zombie”, even manipulating it to travel up to 55 yards away from its colony to avoid getting attacked. It then decapitates the ant and lives in its empty head during further development. What a shitty way to die. When the fly is almost at maturity, it emerges from the ant’s head and goes off to do whatever it is phorid flies do besides being amazing brain-eating badasses. Scientists have been letting these flies loose in the Texas area for years in order to reduce the growing fire ant population and allow native ant species a chance to get resources.