Horsehair worms are parasitic creatures that typically develop as larvae in the bodies of insects like grasshoppers, beetles, or mantises. Once mature, they manipulate their host's behavior, compelling it to seek water. When immersed, the adult horsehair worm emerges from the host's body, completing its life cycle in the water. The host often drowns during this process. The exact mechanism of how the worm influences the host's behavior is not fully understood, but it involves a form of parasitic

Silkworms are the larva of a moth... - HKMC Edu Institute