House Pseudoscorpions are 3 to 4 mm in length and have a rich mahogany color. The four pairs of legs increase sequentially in length from the 1st to the 4th pair. There is a single eye on each side of the cephalothorax (head plus thorax) and a 12-segmented abdomen (although only ten segments are easily visible). Excluding appendages, the body resembles a teardrop. The pedipalps, located in front of the first pair of legs, are more than twice as long as the legs. When extended, crab-like, they measure 7 to 9 mm across.