Cylindrical Bark Hister vs Deer Bot Fly

Side-by-side species comparison

Attribute Cylindrical Bark Hister Deer Bot Fly
Scientific Name Teretrius fabricii Cephenemyia stimulator
Order Coleoptera Diptera
Family Histeridae Oestridae
Size 2-3 mm 12-15 mm
Habitat Woodlands Woodlands
Diet Wood Feeders Parasites
Regions Europe, North America (introduced) Europe
Conservation Least Concern Least Concern

Cylindrical Bark Hister

A tiny, cylindrical hister beetle that lives under bark of dead trees. Its elongated shape allows it to follow bark beetle tunnels.

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Did You Know?

It was intentionally introduced to North America from Europe to help control the smaller European elm bark beetle.

Deer Bot Fly

A parasitic fly that deposits larvae in the nostrils of roe deer. The larvae develop in the pharyngeal region before being sneezed out.

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Did You Know?

Once erroneously claimed to fly at over 1,300 km/h, making it a famous example of scientific exaggeration.