Order Pseudoscorpiones, also known as false scorpions or pseudoscorpions, are a group of arachnids that resemble scorpions without a tail or venomous sting. They are often found living in leaf litter, soil, and other debris, preying on small insects and mites. The group's name comes from their similarity to true scorpions and their defensive posture, which includes raising their front appendages in the air. Other synonyms for Order Pseudoscorpiones include chelifers, book scorpions, and false spiders. Despite their small size, these arachnids play an important role in many ecosystems, acting as both predators and decomposers.