Western Encephalitis Mosquito vs Norfolk Hawker

Side-by-side species comparison

Attribute Western Encephalitis Mosquito Norfolk Hawker
Scientific Name Culex tarsalis Anaciaeschna isosceles
Order Diptera Odonata
Family Culicidae Aeshnidae
Size 4-6 mm 62-67mm
Habitat Wetlands Wetlands
Diet Blood Feeders Predators
Regions Western North America, from Canada to Mexico Europe
Conservation Least Concern Near Threatened

Western Encephalitis Mosquito

A medium-sized mosquito with a distinctive white band on the proboscis and banded legs. It is the most important vector of Western equine encephalitis and St. Louis encephalitis in western North America. It breeds in a wide variety of sunlit and shaded water sources.

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Did You Know?

Its feeding behavior shifts seasonally from birds in spring to mammals in late summer, which drives encephalitis virus spillover to humans.

Norfolk Hawker

A large brown hawker dragonfly with distinctive green eyes and a yellow triangle on the second abdominal segment. It is associated with grazing marshes containing the water soldier plant.

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Did You Know?

It depends on the water soldier plant for egg-laying, making it vulnerable to the loss of this aquatic plant.