A pseudoscorpion is a small arachnid that resembles a scorpion but lacks a tail and poison. There are several synonyms for the word pseudoscorpion, including false scorpion, book scorpion, and chelifer. Other synonyms include false spider, false harvestman, and false whip scorpion. Pseudoscorpions are found around the world and are commonly found in leaf litter, soil, and debris. They are also known for their ability to feed on other small insects and mites. While they may resemble a dangerous scorpion, pseudoscorpions are harmless to humans and are actually beneficial as they help control insect populations.