It was mid march so it was too early for pollen and beetles and I know there was nobody with a light in front of me. It was taken in North Carolina some where right outside the smoky mountains. The sun was going down and I think I was testing the flash. I do know that I had flash on. It just looks so weird, doesn't it?
This could actually be the explanation... It very well could be a small object flying (or floating) by near the flash of the camera. Flash goes off> lights it up> lack of DOF in photography give's the illusion of it being larger than it actually is. "Objects in mirror are closer..."
That's my guess.
EDIT: you beat me. Yes, you had the flash on. I can tell by the picture.