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Script #: 6429
Topic: Insects and Pests
Category: Common Indoor Household Pests
Last Revised: 7/2007
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Booklice (6429)

booklice image

Booklice, also called psocids, are not true lice. While they resemble lice in size and shape, booklice feed only on fungi or mold. If you find them in grain or other stored food products, it is an indication of high humidity which encourages mold growth. In addition to food products, psocids may be found under wallpaper, in furniture, along the sides of windows or on window sills around potted plants. Booklice do not bite, transmit disease, or damage food or fabric, but they can be very annoying when present in large numbers.

For more information, please visit this Penn State Fact Sheet.

Printable PDF file

Penn State Entomology Department




For more information on this subject, Please visit the College of Agricultural Sciences Publications Web site.

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