Horsehair Worm
- Regions Found: Worldwide
- Scientific Order: Ecdysozoa
Some might claim we’re cheating by having a worm on the list. Yet you should be aware that this specific worm acts as a parasite and exclusively invades insects. Therefore, an insect could very well have its body invaded and taken over by the Horsehair Worm. What ends up happening is that larvae tend to be in a marine environment where another insect might pop by. They will then invade, say, a grasshopper that will then become its host. From there, the worm acts sort of like an infection.