Poison Sagworm

The Poison Sagworm eats best the Purpplage. Of course the worm is immune to its poison. Instead it stores this poison inside its body and therefore it won't be eaten by carnivores like the Sagworm Catcher. Though the Gliding Sagworms live on the other side of the mountain chain, sometimes a swarm of these will be blown over the mountains into the Krakow region and along with them the Sagworm Catchers. The Poison Sagworms evolved from such a blown away population of Gliding Sagworms. The Gliding Sagworms wouldn't survive in the rocky region, so that they're not native in this region.