I was looking for something else and came across this. But I see this kind of mistake all the time... Canadian Soldiers are muckleheads/muffleheads/midges. They are not mayflies. Mayflies look more like dragon flies and are sometimes called Green Bay flies. Canadians Soldiers/muckleheads look more like mosquitos. Mayflies live a few minutes to a few days. Muckleheads live for just under a week.