In late August and into early fall, there is a species of particularly obnoxious horsefly in Mississippi whose bite stings like a wasp and can give you encephalitis. It is hated by any joggers who have ever encountered the little bastards. One of them got me last summer and my left shoulder was numb for several days after.

The community of Horsefly (estab. 1859) lies on the shore of the Horsefly River in the Cariboo Country of Central British Columbia, Canada. The Horsefly River does not directly drain the waters of Horsefly Lake where you can do outdoorsy activities at Horsefly Lake Provincial Park. The Horsefly River drains into Quesnel (don't pronounce the "s") Lake at Horsefly Bay. Oh, and between Horsefly Lake and the upper course of Horsefly River there is Horsefly Mountain. To get to all those Horseflies, leave the Trans-Canada Highway in Cache Creek on BC Highway 97. In 150 Mile House, leave Highway 97 on Likely Road, and then Horsefly Road. If you're planning on visiting all those Horseflies, I recommend packing OFF! Insect Repellant in your luggage.