Booklouse

Natural Habitat

Damp, dark, and undisturbed places, especially where mold or fungi grow. Indoors, they are found in old books, wallpaper, stored food, and areas with high humidity.

Diet & Feeding

Fungi, mold, starch, glue (from book bindings or wallpaper), dead insects, and other organic matter.

Behavior Patterns

Generally nocturnal and avoid light. They are fast-moving insects, but tend to scatter when disturbed. They reproduce quickly in favorable conditions (high humidity, abundant food).

Risks & Benefits

Generally harmless to humans, though some people may have allergic reactions to their presence. They can cause damage to books, paper, and stored food products. Their presence often indicates high humidity or moisture problems within a structure, which can lead to more significant issues like mold growth.

Identified on: 10/22/2025