Chullanchaqu
When I was working in the Amazon, I was told of a creature called a Chullanchaqui. They make gardens in the forest, generally of all one species of plant, and if you encounter them, you are supposed to walk around them. If you must pass through you, ask permission, walk through quickly, and don’t touch anything.
If you don’t obey this, the Chullanchaqui will attack you. Well, those forest gardens are the large hives of leaf-cutter ants, and if you spend any time inside them or disturb the vegetation in them, the ants will come out and attack you.