Flat Bark Hister Beetle vs Tanner Beetle

Side-by-side species comparison

Attribute Flat Bark Hister Beetle Tanner Beetle
Scientific Name Hololepta plana Prionus coriarius
Order Coleoptera Coleoptera
Family Histeridae Cerambycidae
Size 7-10 mm 18-45 mm
Habitat Woodlands Woodlands
Diet Wood Feeders Root Feeders
Regions Eastern North America Western Europe, Central Europe, Southern Europe
Conservation Least Concern Least Concern

Flat Bark Hister Beetle

An extremely flattened, disc-like black beetle found under bark of dead trees. Its body is compressed to fit in the narrow space between bark and wood.

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Did You Know?

Its body is so flat it can squeeze into gaps less than 2 mm wide to pursue prey under tight-fitting bark.

Tanner Beetle

A large, robust, dark brown longhorn beetle that flies noisily at dusk. Its powerful larvae bore into the roots of deciduous trees for up to four years.

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Did You Know?

Males produce a squeaking sound by rubbing their thorax against their head when handled.