Aedes triseriatus

Aedes triseriatus, commonly known as the eastern treehole mosquito, is a species of mosquito native to the eastern United States. It is a member of the family Culicidae and is known for its role as a vector of La Crosse encephalitis virus.

Description

Aedes triseriatus is a small to medium-sized mosquito with a dark brown to black body. It is characterized by its distinctive white scales on the sides of the thorax and abdomen, which form a pattern of three longitudinal stripes, hence the name "triseriatus." The legs are also dark with white banding.

Habitat

This species is typically found in wooded areas where it breeds in natural containers such as tree holes, hence the common name "treehole mosquito." It can also utilize artificial containers like tires and buckets, which collect rainwater.

Life Cycle

The life cycle of Aedes triseriatus includes four stages: egg, larva, pupa, and adult. Females lay eggs on the sides of containers just above the water line. The eggs can withstand desiccation and hatch when submerged by rainwater. Larvae develop in the water, feeding on organic matter, and eventually pupate. Adults emerge from the pupae and are capable of flight.

Medical Importance

Aedes triseriatus is a significant vector of the La Crosse encephalitis virus, which can cause severe neurological disease in humans, particularly children. The virus is maintained in a cycle involving small mammals, such as chipmunks and squirrels, and mosquitoes. Humans are incidental hosts.

Control Measures

Control of Aedes triseriatus populations involves eliminating breeding sites by removing or treating containers that collect water. Biological control methods, such as introducing natural predators, and chemical control using larvicides and adulticides, are also employed.

Also see

• Aedes aegypti
• Aedes albopictus
• Culicidae
• La Crosse encephalitis