What is the most common mosquito in Vermont?

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In Vermont, a mosquito that suits the cool, variable climate and thrives in a wide range of stagnant-water habitats tends to dominate. Culex pipiens, the common house mosquito, fits that pattern. It tolerates temperate conditions, overwinters in or around water, and breeds in many kinds of standing water—from storm drains to ponds and even neglected containers. Because of these adaptable traits, this species is the one you’re most likely to encounter across the state, and it’s also a key vector for West Nile virus in many areas.

The other choices don’t fit Vermont as well. Aedes aegypti prefers warm, tropical to subtropical climates and container habitats typical of urban environments, not common here. Anopheles gambiae is an African species associated with malaria and not established in Vermont. The cattail-associated mosquitoes are limited to specific marshy habitats and don’t occur as broadly as Culex pipiens across the state.