Deer Ked vs Hermit Beetle

Side-by-side species comparison

Attribute Deer Ked Hermit Beetle
Scientific Name Lipoptena cervi Osmoderma eremita
Order Diptera Coleoptera
Family Hippoboscidae Scarabaeidae
Size 5-7 mm 25-35 mm
Habitat Woodlands Woodlands
Diet Blood Feeders Wood Feeders
Regions Europe, Asia, introduced to North America Europe
Conservation Least Concern Near Threatened

Deer Ked

A flattened, reddish-brown blood-sucking fly that sheds its wings upon finding a deer host. It clings tenaciously to the hair with strong claws and feeds on blood throughout its life.

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Did You Know?

After landing on a host, it breaks off its own wings permanently, spending the rest of its life as a wingless ectoparasite.

Hermit Beetle

A large, dark chestnut beetle that lives its entire life inside hollow old trees. It emits a strong fruity odor similar to apricots.

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Did You Know?

Most individuals never leave the tree they are born in, making them extremely poor colonizers.