The booklice is a very small insect with no wings, almost 1 mm to 2 mm long, dorso-ventrally flattened and almost translucent yellow in colour.
The booklice feed on microorganisms such as bacteria, yeast and mold found in wetlands, such as the basement. They are not particularly enemies of paper, but they can be dangerous for books or any other documents because they feed on glues, bindings and mold that can be found on a work stored in an atmosphere too wet.
The booklice like temperatures from 25 °C to 30 °C and humidity above 75%. Below 35% humidity, it cannot survive. All places offering these conditions are likely to be infested, namely, books, furniture, behind baseboards, etc.
The female of this species does not need a male to reproduce, so we speak of parthenogenesis. During her life, she will lay some 200 eggs. These are generally deposited separately, at a speed of 1 to 3 per day.