Some time back some friends of mine in Portales, NM sent this video to me. It is so short but I thought you might enjoy it too. They sent the video with the follow note:
This is some footage of the dancing fly of Portales, New Mexico. We have an entymoligist (bug studying) friend who alerted us of its presence here in our area. I hope that you will be able to see it when you come to visit us. I was lucky to capture it on video. It is quite rare.
Have a good day, ya'll.