Bug Identifier
Pseudoscorpion
Community identification

Pseudoscorpion

Chelifer cancroides (common example species)

Order & Family
Order Pseudoscorpiones; various families (e.g., Cheliferidae)
Size
2 to 8 millimeters (0.08 to 0.31 inches)
See this bug in the Encyclopedia

Natural Habitat

Damp environments, leaf litter, under tree bark, and occasionally indoors in bathrooms, kitchens, or libraries.

Diet & Feeding

Carnivorous; they feed on small arthropods like booklice, mites, springtails, and small fly larvae.

Behavior Patterns

They are solitary, nocturnal predators that use their pincer-like pedipalps to capture prey. Some species hitch rides on larger insects to move to new locations, a behavior known as phoresy.

Risks & Benefits

They are harmless to humans and pets as they lack a stinger and their mouthparts cannot pierce skin. They are beneficial to the ecosystem and homes because they act as natural pest control against common household pests like booklice.