Web-spinning Barklouse vs Common Bark Louse

Side-by-side species comparison

Attribute Web-spinning Barklouse Common Bark Louse
Scientific Name Archipsocus nomas Graphopsocus cruciatus
Order Psocoptera Psocoptera
Family Archipsocidae Stenopsocidae
Size 1.5-2.5 mm 3-4 mm
Habitat Forests Woodlands
Diet Omnivores Wood Feeders
Regions Southeastern United States, Central America Europe, North America
Conservation Least Concern Least Concern

Web-spinning Barklouse

A bark louse known for spinning communal silk webs over tree bark in tropical and subtropical regions. Large colonies can cover entire tree trunks.

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Did You Know?

Their communal silk webs can cover entire tree trunks like a ghostly shroud.

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.