Booklice (specifically a Psocid)

Scientific Name: Liposcelis spp.

Order & Family: Psocodea; Liposcelididae

Size: 1mm to 2mm in length

Booklice (specifically a Psocid)

Natural Habitat

Damp, warm, and undisturbed areas; often found in books, pantries, wallpaper, and areas with high humidity.

Diet & Feeding

Microscopic mold, fungi, starches (like book glue), and organic debris.

Behavior Patterns

They are scavengers that thrive in high humidity. They do not fly (often wingless in indoor species) and are known for their fast, jerking running movements when disturbed.

Risks & Benefits

They do not bite or sting and are harmless to humans and pets. However, they are considered a nuisance pest and can indicate a moisture or mold problem within the home.

Identified on: 3/12/2026