Booklouse (psocid), likely a winged form

Damp indoor areas, especially beneath wallpaper, in stored books, cardboard, and dusty crevices; also leaf litter outdoors.

Feeds mainly on mold, fungi, algae, starches, and microscopic organic debris rather than blood or living tissue.

Often occurs in humid, poorly ventilated places and may reproduce rapidly by parthenogenesis. It is wingless in many species, though winged individuals can disperse when conditions change.

Harmless to people and pets and does not bite or transmit disease. Large indoor populations indicate excess moisture and may contaminate or damage stored paper products, while outdoors it helps decompose organic matter.