Flower Pots in Southwestern U.S. a Common Breeding Site for Aedes aegypti Mosquitoes The Aedes aegypti mosquito typically prefers humid climates, but it has gained a foothold in the arid southwestern U.S. by using manmade containers for breeding sites—in particular, flower pots and the saucers underneath them. Entomology Today February 23, 2018 Leave a Comment