Arctic Louse Fly vs Silverfish Strepsipteran

Side-by-side species comparison

Attribute Arctic Louse Fly Silverfish Strepsipteran
Scientific Name Ornithomya fringillina Mengenilla chobauti
Order Diptera Strepsiptera
Family Hippoboscidae Mengenillidae
Size 4-6 mm 2.0-3.5 mm (males)
Habitat Tundra & Arctic Heathland
Diet Parasites Parasites
Regions Scandinavia, northern Russia, subarctic Canada, Alaska Europe, Africa
Conservation Least Concern Not Evaluated

Arctic Louse Fly

A flattened, wingless or short-winged parasitic fly that lives among the feathers of Arctic birds. Its laterally flattened body allows it to move easily through plumage. Adults have strong claws for gripping feathers.

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Did You Know?

These flies can survive being transported thousands of kilometers on migratory birds from the Arctic to their wintering grounds.

Silverfish Strepsipteran

A primitive strepsipteran that parasitizes silverfish and firebrats. Unlike most strepsipterans, the adult female is free-living.

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Did You Know?

This is one of the most primitive strepsipterans, and the free-living adult female resembles a tiny larva.