Booklouse (barklouse)

Damp indoor spaces, stored food, books, and leaf litter; often found where mold grows.

Mold, fungi, algae, and starchy or microscopic organic residues.

Small, pale, soft-bodied insects that move quickly; they thrive in humid conditions and reproduce readily indoors.

Harmless to people and pets and do not bite; large numbers can contaminate stored foods or signal excess moisture and mold.