Booklouse

Natural Habitat

Damp, dark, and warm environments with high humidity, often found in libraries, pantries, and behind wallpaper.

Diet & Feeding

Microscopic fungi, mold, spores, starch, and organic debris found in glue, paste, and stored grains.

Behavior Patterns

They are wingless, fast-running insects that thrive in humidity over 60%. They reproduce rapidly and are most active in warm, damp months.

Risks & Benefits

They are harmless to humans and pets, but can be a nuisance and cause minor damage to books or contaminate stored dry goods; they serve as indicators of high humidity.

Identified on: 1/10/2026