'Spore worm
This is a very small monster that lives in mushrooms, funguses, and even rotting woods. It has a very high amount of condensed poison depending on what it has eaten, meaning that touching it can cause death due to whatever it has eaten.
It is called a spore worm because it carries the spore of what it has eaten all over its body due to the mucus it secretes. This allows for that spore to take hold somewhere else and grow. This worm can be responsible for entire species of mushrooms, molds, and even some smaller monsters growing at all.
They will often grow to the size of a toothpick, by that time, they will then shed their skin and grow wings to fly in to the air and lay their eggs where the rain will fall first within the jungle…'