The Pimmsonknorli (Minirhinocorys ossirostris) is a microscopic creature measuring just 0.13 mm. It lives inside pollen grains and possesses a tiny, bone-reinforced snout (called an "Ossirostrum") used to pierce and chemically process pollen. This process makes the pollen digestible for bees, meaning bees depend on the Pimmsonknorli to survive.

Discovered in 2025, it became known as a hidden keystone species in ecosystems. In 2027, a big event known as The Great Knorli Migration will occur when massive pollen failure forces the creatures to flee their habitats, causing ripple effects across plant and bee populations.