Aedes triseriatus
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Aedes triseriatus (Say, 1823) - (eastern treehole mosquito)
The mosquito is a common mosquito in eastern and central parts of North America and has not spread to other regions. However, it has been intercepted from used tires shipped to France in 2004. It is the principal vector of the La Crosse encephalitis virus. There are around 100 reported cases of this disease in North America. Several other viruses can be transmitted by this species also. It bites during dawn and dusk and is mostly associated with forests or shaded areas near forests.
A. triseriatus breeds in tree holes and discarded containers. The eggs are laid on the sides of tree holes or containers, just above the water line and may overwinter. They hatch when they become covered with water and temperatures are sufficiently high. The development from egg, through 4 larval stages, to mature adults can last less than 2 months under favorable conditions and there may be up to 3 (sometimes 4) generations per year.
The wings of the adult are about 3½-4 mm long. The dorsal part of the thorax is dark brown to black in the middle and whitish along the sides. Their abdomen is blackish, with white patches on the sides. The tarsi are dark.
Synonyms:
Ochlerotatus triseriatus
- Other images of Aedes triseriatus (IPM Images and BugGuide - click to enlarge)
