Larval habitats of Aedes (Stegomyia) aegypti (Linnaeus) and Culex (Culex) quinquefasciatus Say in the epiphyte Aechmea distichantha Lemaire (Poales: Bromeliaceae), were found and described both in semi-urban and rural localities of piedmont forest of the subtropical mountainous Yungas rainforest in the province of Tucuman, northwestern Argentina. This finding suggests that these anthropophilic disease vectors have achieved a degree of introduction and adaptation to the primitive forest, and that the bromeliad, which possesses phytotelmata, has an epidemiological role in providing natural water containers for the breeding of mosquito vectors.