Dusty Barklouse vs Common Bark Louse

Side-by-side species comparison

Attribute Dusty Barklouse Common Bark Louse
Scientific Name Lachesilla pedicularia Graphopsocus cruciatus
Order Psocoptera Psocoptera
Family Lachesillidae Stenopsocidae
Size 1-1.5 mm 3-4 mm
Habitat Indoors Woodlands
Diet Fungus Feeders Wood Feeders
Regions Worldwide Europe, North America
Conservation Least Concern Least Concern

Dusty Barklouse

A tiny psocid commonly found in old books, herbaria, and grain stores. It thrives in dusty undisturbed environments.

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Did You Know?

It is a major pest in natural history museum collections worldwide.

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.