Medium size mosquito
Proboscis: dark scaled
Palpi: short, dark
Head: Occiput with narrow golden scales and erect forked scales dorsally with broad white scales laterally.
Thorax: Integument of scutum brown; scutum clothed with narrow curved golden-brown scales, paler or presutellum space. Scutellum with narrow golden scales and brown setae on the lobes. Pleura with small patches of white scales.
Abdomen: 1st tergite with a median patch of dark-bronze scales ; remaining tergites dark-scaled with bronze to metallic blue-green reflection, with conspicuous basal bands and lateral patches of white scales; each band broadly rounded on posterior margin and narrowed at the sides where it is joins the lateral patches. Venter predominantly whitish-scaled, usually speckled with a few brown scales.
Legs: Dark-scaled with bronze to metallic blue-green reflection; posterior surface of femora and tibiae pale; femora and tibiae tipped apically with pale scales.
Wings: length 3.5 to 4.0 mm. Scales narrow, dark.
Bionomics: Larvae found in foul water in rain barrels, catch basins, faulty cesspools, ditches, and other similar habitats. Generally known as the northern house mosquito. They infest houses and bite at night. Adult females pass the Winter hibernating in cellars, basements, outbuildings, caves and other places that provide protection from cold. Flight range …1/2 mile or less.
Medical Importance: They can transmit the organisms causing bird malaria and Heartworm of dogs. Western Equine, West Nile virus and St. Louis encephalitis have been isolated in this species.