Booklouse

Scientific Name: Liposcelis spp.

Order & Family: Psocodea: Liposcelididae

Size: 1 - 2 mm

Booklouse

Natural Habitat

Damp, warm areas with high humidity, often found in libraries, kitchens, bathrooms, or around stored paper and grains.

Diet & Feeding

Feed on microscopic fungus, mold, starch in book bindings, and organic debris.

Behavior Patterns

Photophobic and moisture-loving; they reproduce rapidly in humid conditions and are often seen scurrying in a jerky motion.

Risks & Benefits

They do not bite humans or transmit disease, but are considered a nuisance pest that can indicate high humidity issues or contaminate stored food products.

Identified on: 1/13/2026