This pin was originally released in October 2025, as a part of the Bizarre Beasts Pin Club.

Pseudoscorpions are any of the 3,000+ species in the order Pseudoscorpiones. They first appeared in the fossil record about 390 million years ago and they haven’t changed much since. You can find these arachnids all over the world, usually tucked into dark, humid spaces, like on forest floors and under rocks, with some even living in caves. And you can find them in lots of different living arrangements, ranging from totally solitary to whole communities.
All of these species are predators, but they’re small (2-12 mm). This means they target miniscule prey, including many household pests, like clothes moth larvae, booklice, and dust mites.