A really poor photo of this tiny, tiny fly, which resembles a little moth. It was the only shot I got as when I tried to get closer it took off, not to be seen again. About these odd looking little flies, Bug Guide has this to say:"Larvae feed on algae, fungi and bacteria in sewage and organic sludge; adults feed in polluted water and on flower nectar" and "Larvae play an important role in purifying sewage in industrial sewage treatment plants. Adults are very weak fliers, covering only a few feet at a time in short erratic flights. Outside, they can be blown considerable distances by the wind."