Booklouse

Natural Habitat

Damp, warm areas with high humidity such as old books, wallpaper, stored grains, and under tree bark.

Diet & Feeding

Fungi, mold, lichen, and starchy organic matter like book paste.

Behavior Patterns

They are wingless, fast-running insects that thrive in humid conditions; they do not actually eat the paper of books but rather the mold growing on it.

Risks & Benefits

Harmless to humans as they do not bite or sting, but they can be a minor nuisance in libraries or pantries and are indicators of high moisture/mold issues.

Identified on: 1/4/2026