Anopheles quadrimaculatus

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Anopheles quadrimaculatus - 126) forewing of female, 127) terminalia of male (click on image to enlarge it)
Authors: Adriana Beltrán-Aguilar, Sergio Ibáñez-Bernal, Fredy Mendoza-Palmero, César A. Sandoval-Ruiz & Ruth A. Hernández-Xoliot
Source: Acta zoológica mexicana (2011) 27 p. 696
Anopheles quadrimaculatus (click on image to enlarge it)
Author(s): CDC/Edward McCellan
Source: Public Health Image Library - image ID 3169

Anopheles quadrimaculatus Say, 1824

The mosquito is found in eastern North America from southern Canada to Florida and parts of Mexico and west to Minnesota. It is considered an important epidemic vector for eastern equine encephalomyelitis. It also transmits dog heartworm and until the eradication of malaria from North America was an important malaria vector. It is commonly found in and around houses and feeds mainly on humans and other large mammals like domestic animals. The main feeding activity is at dawn or dusk, but it can also bite during the night.

It breeds in the clean water of swamps and wetlands but can be also found in containers and ditches. The larval development lasts 2-3 weeks, depending on temperature and food supply. In warmer areas it can have up to 10 generations per year and overwinters as mated female. The adults have a medium size compared to other species of this genus (wing length about 4 mm). The palpi are dark and unbanded and the wing has 4 distinct dark spots.