I conclude that this fly is of Laphria genus. I do remember, however, that Eric Eaton pointed out that many very hairy insects tend to quite literally "go bald," and fade in color, as they age, getting into battles with predators, rival males, etc. So, it may be very difficult to get this particular specimen beyond genus. I was suprised to see this specimen this late in the season. We have had a very hard freeze.