Aedes (Och.) dorsalis


  • (Meigen)
  • 1830b:242 (F; as Culex)
  • Berlin, Germany (MNHP)


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Austria, Belarus, Belgium, Bulgaria, Canada, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Japan, Korea, South, Latvia, Lithuania, Macedonia, Mexico, Mongolia, Netherlands, Norway, Poland, Romania, Russia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Taiwan, Tajikistan, Turkey, Ukraine, United Kingdom (includes Guernsey, Jersey, Isle of Man), United States, contiguous lower 48, Yugoslavia (Serbia and Montenegro)


  • None


The larvae occur in a variety of habitats including both brackish and fresh water. They are often found in large numbers in tidal marshes along the Pacific coast and in saline pools along the margins of Great Salt Lake in Utah. The species also occurs in fresh-water marshes and in overflow from artesian wells and irrigation ditches. The species is an important pest of man and animals in Utah, California, and often in other localities in western North America. (Carpenter and LaCasse 1955:176)

Medical Importance

Western equine encephalitis virus (WEE) has been isolated from wild-caught Ae. dorsalis in the San Joaquin Valley, California and in Colorado. California encephalitis virus has been isolated from wild-caught Ae. dorsalis from Kern County, California. (Carpenter and LaCasse 1955:176) Ae. dorsalis is considered a vector of WEE and West Nile Virus (WNV) (Turell et al. 2005:60).


Adult Stage, detail images:

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Adult Stage, illustrations:

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