Which mosquito species is known for transmitting dengue fever?

Aedes aegypti is the mosquito species primarily responsible for transmitting dengue fever. This species thrives in urban environments and is particularly well-adapted to live in close association with humans, which facilitates the spread of the virus. Aedes aegypti is recognized for its distinct white markings on its legs and a lyre-shaped pattern on its thorax.

Dengue fever transmission occurs when these mosquitoes bite an infected person and then subsequently bite another person, transferring the dengue virus. The species is notorious for being active during the daytime, especially in the early morning and before dusk, which increases the likelihood of human contact.

Other mosquito species mentioned, such as Culex pipiens, Anopheles gambiae, and Psorophora columbiae, are associated with different diseases. Culex pipiens primarily transmits West Nile virus and other arboviruses, Anopheles gambiae is known for its role in malaria transmission, and Psorophora columbiae is not a significant vector for common human diseases. Hence, their relevance to dengue fever transmission is minimal, reinforcing Aedes aegypti's critical role in the epidemiology of dengue.