Anopheles quadrimaculatus (Common Malaria Mosquito)
Anopheles quadrimaculatus (Common Malaria Mosquito) is most abundant in the south-eastern states, but is occasionally found in South Dakota. The Dakotas represent the northwestern boundary of this Anopheles species' territory. The Anopheles quadrimaculatus is the most important vector of malaria in the U.S. It frequently attacks humans, and is the most common Anopheles species found in houses. This mosquito is brown and has three long, similar-looking projections on its head. Females are recognized by the presence of 4 dark spots near the center of each wing (see more detailed photos by clicking on species name). It prefers to attack after dusk and just before dawn.