Common Barklouse vs Large-winged Barklouse

Side-by-side species comparison

Attribute Common Barklouse Large-winged Barklouse
Scientific Name Cerastipsocus venosus Psocus leidyi
Order Psocoptera Psocoptera
Family Psocidae Psocidae
Size 4.0-6.0 mm 3.0-5.0 mm
Habitat Woodlands Woodlands
Diet Wood Feeders Wood Feeders
Regions North America North America
Conservation Not Evaluated Not Evaluated

Common Barklouse

A large winged barklouse found in herds on tree trunks in eastern North America. It has prominent veined wings and feeds on algae and lichens.

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Did You Know?

These barklice form conspicuous herds of up to several hundred individuals that march across tree trunks in unison.

Large-winged Barklouse

A conspicuous barklouse with large patterned wings found on deciduous trees. Adults are active in late summer and autumn.

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Did You Know?

Despite their delicate appearance, winged barklice are surprisingly strong fliers and are attracted to lights at night.