Among mosquitoes in the genus Aedes,several species’ preferred habitats for oviposition (i.e., laying eggs) and larval development are small, water-filled containers, both natural and human-made such as the examples shown here: cemetery vase (top left), tires (top right), and a tree hole (bottom left). These sorts of containers are often common near houses and workplaces, resulting in exposure of people to biting Aedes populations. Detritus such as plant matter and dead insects contribute feeding material for the developing Aedes larvae, such as shown in the closeup of water in a tire (bottom right), where a drowned fly is visible on the surface and mosquito larvae are visible below. (Top left and bottom right photos by Steven A. Juliano, Ph.D.; top right and bottom left photos by Kristina M. McIntire, Ph.D.)