Booklouse
Scientific Name: Liposcelis spp.
Order & Family: Psocodea; Liposcelididae
Size: 1 to 2 mm in length
Natural Habitat
Damp, warm environments with high humidity like cupboards, bookshelves, and wall voids.
Diet & Feeding
Feed on microscopic mold, fungi, algae, and organic starchy materials like book glue.
Behavior Patterns
Photophobic and move in jerky, running motions; they thrive in humidity over 60%.
Risks & Benefits
They are harmless to humans but can be a nuisance and signal a moisture or mold problem.
Identified on: 2/4/2026