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Book Louse

Liposcelis rufa

Book Louse

The adult book louse is a minute reddish-brown psocid often found in damp books, stored grain, wall voids, bird nests, and other places where microscopic fungi grow. It grazes on mold, spores, and traces of organic debris, acting more like a scavenger than a true parasite. Adults are wingless, flattened, and quick to disappear into seams and crevices when disturbed. A noticeable presence indoors is often a sign of high humidity rather than an animal infestation that attacks people.

Type
Stealth
Conservation status
NE

Growth chain

  1. ?
  2. Book Louse

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Range map records: GBIF.org (CC0 and CC BY). Country outlines: Natural Earth.