Common Bark Louse vs Furniture Booklouse

Side-by-side species comparison

Attribute Common Bark Louse Furniture Booklouse
Scientific Name Graphopsocus cruciatus Liposcelis paeta
Order Psocoptera Psocoptera
Family Stenopsocidae Liposcelididae
Size 3-4 mm 0.7-1.0 mm
Habitat Woodlands Indoors
Diet Wood Feeders Fungus Feeders
Regions Europe, North America Europe, North America, Oceania
Conservation Least Concern Not Evaluated

Common Bark Louse

A winged bark louse with distinctive cross-shaped wing markings found on tree trunks across Europe. It feeds on algae and lichen on bark.

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Did You Know?

Its cross-shaped wing pattern makes it one of the easiest bark lice to identify.

Furniture Booklouse

A minute pale booklouse often found in new homes and recently plastered walls. It feeds on microscopic mold in damp indoor environments.

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Did You Know?

Outbreaks in new buildings disappear once the structure dries out and mold can no longer grow on fresh plaster.