
The Asian tiger mosquito (Aedes albopictus) is a small black and white mosquito, it’s about 1/4-inch long. The name “tiger mosquito” comes from its white and black color pattern. It has a white stripe running down the center of its head and back with white bands on the legs. Note that other Illinois mosquitoes also have banded legs.
These mosquitoes lay their eggs in water-filled natural and artificial containers like cavities in trees and old tires; they do not lay their eggs in ditches or marshes. The Asian tiger mosquito usually does not fly more than about 1/2 mile from its breeding site.
The Asian tiger mosquito was introduced into the United States in tire casings imported for recapping. Movement of tire casings has spread the species to more than 20 states since 1985. The tiger mosquito is an important disease carrier in Asia. In the United States, it was found to be infected with LaCrosse encephalitis viruses and West Nile virus, which can cause encephalitis (inflammation of the brain). However, it is presently unclear whether the Asian tiger mosquito will be a significant carrier of disease in the United States.
The bite of the Asian tiger mosquito is not particularly irritating to most people, but they are persistent biters. Because they breed in nearly any sort of water-filled container, they often become very common and bothersome, even in neighborhoods where there are normally few mosquitoes. In some southern cities, the Asian tiger mosquito has become the most important nuisance mosquito.

