Genus Chelifer refers to a group of arachnids which are commonly known as pseudoscorpions. These tiny creatures are found all over the world, including in Asia, Africa, Europe, and the Americas. There are several synonyms for Genus Chelifer, including Cheliferidae, Chelonethida, and Pseudoscorpionida. These synonyms are used to refer to the same group of arachnids, but they may be more commonly used in different regions or by different scientists. Despite their small size, pseudoscorpions are fascinating creatures that play an important role in regulating the populations of other insects, and they are an important component of many ecosystems around the world.