Aedes aegypti is a mosquito that can spread the dengue fever , Chikungunya and yellow fever viruses , and other diseases . The yellow fever mosquito , Aedes aegypti ( = Stegomyia aegypti , = Aedes ( Stegomyia ) aegypti ) , is a mosquito that can spread the dengue fever , Chikungunya and yellow fever viruses , and other diseases .