Booklouse (psocid)

Humid indoor areas, especially stored food, cupboards, books, paper, and moldy materials.

Feeds mainly on mold, fungi, spores, algae, and organic residues rather than human tissue or blood.

Wingless, soft-bodied, and slow-moving; populations increase in warm, damp conditions. Many species reproduce rapidly, sometimes without males.

Generally harmless to people, pets, and buildings, though large infestations can contaminate stored foods and damage collections. Their presence often indicates excess moisture or mold.