Arctic Louse Fly vs Arctic Psyllid

Side-by-side species comparison

Attribute Arctic Louse Fly Arctic Psyllid
Scientific Name Ornithomya fringillina Cacopsylla brunneipennis
Order Diptera Hemiptera
Family Hippoboscidae Psyllidae
Size 4-6 mm 2-4 mm
Habitat Tundra & Arctic Tundra & Arctic
Diet Parasites Sap Feeders
Regions Scandinavia, northern Russia, subarctic Canada, Alaska Arctic Scandinavia, Finland, northern Russia, subarctic Canada
Conservation Least Concern Least Concern

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.

Arctic Psyllid

A tiny, winged sap-sucking insect that feeds on willow in Arctic and subarctic regions. Adults are brownish with transparent wings and can jump powerfully using enlarged hind legs. Nymphs produce waxy secretions.

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Did You Know?

Psyllids are sometimes called jumping plant lice because they can leap more than 50 times their own body length to escape danger.