These arachnids with their flat, oval bodies resemble tiny scorpions and, like them, have a pair of large pedipalps ending in pincers. However, they lack the stinger at the end of the abdomen, and their bodies are short and rounded at the rear. These insects average 2 to 4 mm in length.
Pseudoscorpions may have two, four or no eyes. Colour varies from yellowish beige to dark brown. The pincers are sometimes black.