Psocid (often called Booklouse)

Natural Habitat

Starchy and damp environments, including old books, wallpaper, stored food products, and damp areas of homes with high humidity.

Diet & Feeding

Microscopic mold, fungi, algae, and starchy materials like book glue, paper, and grains.

Behavior Patterns

They are scavengers that thrive in high humidity (>60%). They do not fly and are often found in large numbers if conditions are damp; their life cycle is about 25 to 110 days depending on temperature.

Risks & Benefits

They do not bite humans or pets and do not spread disease. They are primarily a nuisance and a sign of excess moisture or mold, though they can contaminate stored pantry goods.

Identified on: 1/10/2026