Photo of the week: Black flies

Black flies are late spring and summer pests in many areas of the world. While the aquatic larvae develop in streams, rivers and other sources of running water, the adult flies comb the countryside looking for humans and other on whom to inflict their painful bites. They can also cause a nuisance by swarming around the head, and into the nose, ears, eyes and mouths of people and animals. See this PACE Turf Reference on Black Flies for more information.…