Booklice (Psocid)

Scientific Name: Liposcelis spp.

Order & Family: Psocodea: Liposcelididae

Size: 1mm to 2mm in length

Booklice (Psocid)

Natural Habitat

High-humidity environments, pantries, damp books, under wallpaper, or around leaky plumbing.

Diet & Feeding

Microscopic mold, fungi, algae, starches, and organic debris found in household items.

Behavior Patterns

They prefer dark, damp areas and are most active in warm, humid months. They do not fly or bite, but move rapidly when disturbed.

Risks & Benefits

They are harmless to humans and pets as they do not bite or spread disease. However, they are considered a nuisance pest and an indicator of high humidity or mold issues in a home.

Identified on: 1/1/2026