Family Psocidae is a group of small, winged insects commonly known as booklice or barklice. These creatures are found in many different habitats, including homes, libraries, and gardens. While they may not be well-known, they are an important part of the ecosystem, playing a role in decomposition and nutrient cycling. There are several synonyms for the family Psocidae, including Liposcelididae, Psyllipsocidae, and Caeciliusidae. Despite their different names, these families are all closely related and share many similar characteristics, such as their small size and winged bodies. Whether you call them booklice or Psocidae, these tiny insects are an intriguing and important part of the natural world.