Twin-spot Centurion vs Western Encephalitis Mosquito

Side-by-side species comparison

Attribute Twin-spot Centurion Western Encephalitis Mosquito
Scientific Name Sargus bipunctatus Culex tarsalis
Order Diptera Diptera
Family Stratiomyidae Culicidae
Size 8-13 mm 4-6 mm
Habitat Underground Wetlands
Diet Nectar Feeders Blood Feeders
Regions Europe Western North America, from Canada to Mexico
Conservation Least Concern Least Concern

Twin-spot Centurion

A metallic bronze-green soldier fly with two characteristic pale spots on the frons. It is one of the most common stratiomyids in Europe, found basking on ivy flowers in autumn.

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Did You Know?

It is one of the last flies to be active in autumn, still visiting ivy flowers well into November.

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.