Adults of the Aedes atlanticus are medium sized, with brown, white and have silvery-white coloration. They have a broad strip of silvery-white scales on the top of their thorax. Females feed on a wide variety of hosts, including mammals, birds, reptiles and amphibians. They can be quite pestiferous where they are abundant. They feed mostly in the twilight hours but will bite during the day if their resting area is disturbed. Although the adults have been found infected with La Crosse Encephalitis and West Nile viruses,* they are not considered important in the transmission of any human pathogens. Their flight range is from ¼ mile to ½ mile.