Psocoptera – Psocids/Booklice
Booklice, also called psocids belong to the insect order Psocoptera. They are not true lice. They do not bite, transmit diseases or damage fabric and paper, as they only eat fungi and mould on the surface of materials. If they are seen inside stored products it is an indication of high humidity, which encourages mould growth. They can also be seen under wallpaper, near potted plants, along the sides of windows, and in other warm and damp areas.
Overall, booklice rarely damage premises and are harmless to people and pets. However, they can be a nuisance in large populations.
Life Cycle
Booklice undergo incomplete metamorphosis, where the nymphs look like the adults. The females lay 20-50 white oval eggs that may be covered with silk or debris. The eggs hatch three weeks after being laid. The nymphs develop through six instars before adulthood.
The life cycle of booklice can be completed in only 25 days under favourable conditions. Their total life span is 24–110 days, producing 1–8 generations per year, depending on the species.
Booklice Species
Psocids/Booklice
Winged Booklice
