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Psocoptera are an order of insects that are commonly known as booklice, barklice or barkflies. They first appeared in the Permian period, 295-248 million years ago.

Booklice are wingless and range from approximately 1mm to 2mm in length (1/25" to 1/13"). They are easily mistaken for bedbug nymphs and vice-versa. Booklouse eggs take 2 to 4 weeks to hatch and can reach adulthood approximately 2 months later. Adult booklice can live for six months. Besides damaging books, they also sometimes infest food storage areas, where they feed on dry, starchy materials. They are scavengers and do not bite humans.

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12y ago

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