Pseudoscorpion
Pseudoscorpions are small arachnids in the order Pseudoscorpiones, also called false scorpions or book scorpions.
Pseudoscorpions are small arachnids in the order Pseudoscorpiones, also called false scorpions or book scorpions. They resemble scorpions but lack the long tail and sting, and they are generally harmless to humans. Pseudoscorpions occur in Canada and are often noticed by gardeners, homeowners, and naturalists because they may appear in leaf litter, bark, mulch, or occasionally indoors.
Description
Pseudoscorpions are tiny arachnids with a flattened body and large pincers that resemble those of scorpions. Their lack of a tail is the most obvious difference from true scorpions.
Behaviour and diet
They are predatory and feed on small arthropods such as mites, springtails, flies, ants, beetle larvae, and booklice. They may use silk for moulting or shelter, and some species hitchhike on other animals to disperse.
Habitat and distribution
Pseudoscorpions occur worldwide, with many species found in tropical regions. They commonly live under bark, in leaf litter, in soil, and in animal nests, and some species are occasionally found indoors.
Relationship to humans
Pseudoscorpions are considered harmless and are often beneficial because they prey on pests. They do not attack structures or occupants and are not regarded as dangerous.
Key facts
- Pseudoscorpions are arachnids, not true scorpions.
- They have pincer-like pedipalps but no tail or stinger.
- They are small predators that feed on other tiny arthropods.
- They are harmless to people and pets and cannot sting.
- Many species live outdoors in leaf litter, bark, soil, and nests.
Pseudoscorpions occur in Canada and are often noticed by gardeners, homeowners, and naturalists because they may appear in leaf litter, bark, mulch, or occasionally indoors. Canadian extension and museum sources describe them as harmless, beneficial arachnids.
Frequently asked questions
Are pseudoscorpions real scorpions?
Can pseudoscorpions bite or sting humans?
What do pseudoscorpions eat?
Where do pseudoscorpions live?
Why are they called book scorpions?
Do pseudoscorpions have any benefit?
References
- University of Minnesota Extension — https://extension.umn.edu/insect-relatives/pseudoscorpionsSupports: Harmless to people and pets; cannot bite or sting; arachnid relationship
- Penn State Extension — https://extension.psu.edu/pseudoscorpions/Supports: Size, diet, number of described species, and tropical habitat notes
- Encyclopaedia Britannica — https://www.britannica.com/animal/false-scorpionSupports: Order Pseudoscorpiones, size, worldwide distribution, habitat, silk use, and general biology
- American Museum of Natural History — https://www.amnh.org/explore/ology/ology-cards/155-pseudoscorpionsSupports: Harmlessness, lack of sting, hitchhiking behaviour, and bathtub/sink occurrence
- Michigan State University Extension — https://www.canr.msu.edu/resources/pseudoscorpionSupports: Harmlessness, habitats, silk use, and predation on small arthropods
- Maine Department of Agriculture, Conservation and Forestry — https://www.maine.gov/dacf/php/gotpests/bugs/pseudoscorpion.htmSupports: Harmlessness, indoor encounters, inability to bite or sting, and beneficial role