Booklouse

Scientific Name: Lepinotus spp. or Liposcelis spp.

Order & Family: Order Psocodea, Family Liposcelididae or Trogiidae

Size: 1 to 2 mm in length

Booklouse

Natural Habitat

Damp, warm environments with high humidity; often found in books, paper, stored grain, and under wallpaper containing starch-based glue.

Diet & Feeding

Feed on microscopic fungi, mold, algae, starch, and dead organic matter.

Behavior Patterns

They are wingless, fast-moving insects that thrive in humid conditions. They do not undergo a larval stage and are active year-round in indoor environments.

Risks & Benefits

They do not bite or transmit disease. They are primarily nuisance pests that can damage paper products or contaminate food stores in high humidity.

Identified on: 1/2/2026