Japanese Damaster Ground Beetle vs Large-winged Barklouse

Side-by-side species comparison

Attribute Japanese Damaster Ground Beetle Large-winged Barklouse
Scientific Name Damaster blaptoides Psocus leidyi
Order Coleoptera Psocoptera
Family Carabidae Psocidae
Size 30-55 mm 3.0-5.0 mm
Habitat Woodlands Woodlands
Diet Predators Wood Feeders
Regions Japan (all main islands) North America
Conservation Least Concern Not Evaluated

Japanese Damaster Ground Beetle

A remarkably elongated Japanese ground beetle with an extremely narrow body and extended neck region. It has evolved this shape specifically to feed on snails by reaching deep into their shells.

💡

Did You Know?

It has the most elongated body of any Carabus relative, evolved specifically so it can insert its head and thorax deep inside the spiral of a snail shell to reach the living snail.

Large-winged Barklouse

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

💡

Did You Know?

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