Booklouse

Scientific Name: Liposcelis spp.

Order & Family: Psocodea, Liposcelididae

Size: 1-2 mm

Booklouse

Natural Habitat

Damp, warm environments with high humidity; often found in books, pantries, or under wallpaper.

Diet & Feeding

Starchy pastes, book bindings, mold, fungi, and organic debris.

Behavior Patterns

Mainly nocturnal and avoids light; they multiply rapidly in humid conditions and are known for their jerky running motion.

Risks & Benefits

Harmless to humans as they do not bite or spread disease, but they are considered a nuisance pest that can cause minor damage to paper goods and food stores.

Identified on: 12/28/2025