Liposcelis divinatorius is a scientific name for a type of book louse that commonly infests stored products. Some of the synonyms for this species include Liposcelis paeta, Liposcelis bostrychophila, and Liposcelis brunnea. These synonyms refer to variations of the same species and are used interchangeably in scientific literature. Liposcelis divinatorius, the common name being "book louse," is a small, pale insect often found in households and libraries, where they feed on molds and mildews. They can be controlled by reducing moisture levels in the infested areas, as they thrive in high humidity.