Arctic Mosquito vs Northern Black Fly

Side-by-side species comparison

Attribute Arctic Mosquito Northern Black Fly
Scientific Name Aedes nigripes Simulium venustum
Order Diptera Diptera
Family Culicidae Simuliidae
Size 5-8 mm 2-4 mm
Habitat Tundra & Arctic Forests
Diet Blood Feeders Omnivores
Regions Arctic Canada, Alaska, Greenland, northern Scandinavia, Siberia North America
Conservation Least Concern Least Concern

Arctic Mosquito

A large, dark-bodied mosquito common across the Arctic tundra. Females emerge in enormous swarms after snowmelt to blood-feed on caribou and other mammals. Adults have dark scales and pale-banded legs.

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Did You Know?

Arctic mosquito swarms can be so dense they have been documented driving caribou to stampede across the tundra.

Northern Black Fly

A common biting black fly of northern forests and boreal streams. Larvae form dense colonies on submerged rocks in cold flowing water.

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Did You Know?

Females can detect carbon dioxide exhaled by hosts from over 20 meters away.