Booklouse

Natural Habitat

Warm, humid environments; often found in books, stored food products, old papers, moldy areas, and damp basements.

Diet & Feeding

Feeds on microscopic mold and fungi, starches found in book bindings, stored grains, cereal products, and other organic matter.

Behavior Patterns

Nocturnal; prefers dark, undisturbed, and humid conditions. They are often found in large numbers once established and can be a sign of high humidity or mold issues. They do not bite or sting.

Risks & Benefits

Generally considered a nuisance pest. They do not transmit diseases to humans or animals but can damage books, papers, and contaminate food items. Their presence often indicates high moisture levels in an environment, which can lead to mold growth and other issues. They have no known significant benefits to humans or the ecosystem.

Identified on: 9/2/2025