Dusty Barklouse vs Speonomus Cave Beetle

Side-by-side species comparison

Attribute Dusty Barklouse Speonomus Cave Beetle
Scientific Name Lachesilla pedicularia Speonomus pyrenaeus
Order Psocoptera Coleoptera
Family Lachesillidae Leiodidae
Size 1-1.5 mm 3-4 mm
Habitat Indoors Caves
Diet Fungus Feeders Fungus Feeders
Regions Worldwide France, Spain
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.

Speonomus Cave Beetle

A small cave beetle from the Pyrenees known for its extreme cave adaptations. It has vestigial eyes and elongated sensory structures.

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Did You Know?

The genus Speonomus contains over 100 cave-adapted species in the Pyrenees alone.