Coquillettidia perturbans is a species of mosquito that have been documented in every continent except Antarctica. This mosquito is a known as a vector of West Nile virus and Eastern equine encephalomyelitis. The geographic range of C. perturbans is increasing due to the growing extensity of the feeding area. They are known to exist throughout the United States, mainly with a southern distribution, and are mammalophilic.

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