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<br />The flight range of mosquitoes varies widely with species and <br />environmental conditions. The direction and distance of travel <br />are greatly influenced by availability of food, shelter, and wind <br />conditions. Availability of food is probably the most important <br />factor influencing the movement of mosquitoes in many areas. If <br />an adequate fo~ supply-is close to the production sites, adult <br />mosquitoes probably will not travel far from their sources. On <br />the other hand, mosquitoes may travel several miles when adequate <br />food supplies are not available nearer their larval habitats. The <br />normal flight range of the Anopheles and Culex mosquitoes is usually <br />considered to be about one mile, although recent studies have shown <br />that certain species such as ~. tarsal is may travel several miles. <br />under certain environmental conditions. Most Aedes and Psorophora <br />.pecies are .trong fliers and are known to range several miles from <br />their larval habit.ta. <br /> <br />A-2 <br />