Aees aegypti, commonly known as the yellow fever mosquito, is a mosquito that can spread the dengue fever, Chikungunya and yellow fever viruses, and other diseases as well. The mosquito can be recognized by white markings, although other mosquitos may have only slightly different patterns. The mosquito is most frequently found in the tropics; it has some presence in the southeastern United States (such as the lower half of Florida), but it seems to have been competitively displaced by the introduction of Aedes albopictus.