Booklouse (barklouse)

Humid indoor areas, stored foods, books, and surfaces with mold or organic debris.

Feeds on microscopic mold, fungi, and starchy or organic residues.

Small, soft-bodied insects that crawl rather than bite; populations increase in damp conditions and may occur among stored materials.

Harmless to people and pets, and do not damage sound books or wood; large numbers can contaminate stored goods and indicate excess moisture.