|Pseudoscorpion attacking weaver ant|
also known as Pseudoscorpiones or Chelonethida.Pseudoscorpions are generally beneficial to humans since they prey on clothes moth larvae, carpet beetle larvae, booklice, ants, mites, and small flies. They are small and inoffensive, and are rarely seen due to their size.
Pseudoscorpions are small arachnids with a flat, pear-shaped body and pincers that resemble those of scorpions. They usually range from 2 to 8 millimetres (0.08 to 0.31 in) in length. The largest known species is Garypus titanius of Ascension Island at up to 12 mm. Source
Small and wingless, travel for pseudoscorpions from one food source to the next over long distances is no minor obstacle. Many species have managed to get around this hurdle by using insects, especially larger beetles, for transportation. Longhorn and scarab beetles unwittingly carry these tiny hitchhikers on their legs and underneath their wings without any ill effect.