Neogriphoneura sordida (Lauxaniid fly)

I had taken a picture of this beautiful fly while I was at Broxton Rocks, Broxton, Coffee County, Georgia. It was sitting very still on an Epidendrum magnoliae orchid leaf. I didn't know what it was, but I knew that I had never seen a "golden" fly before then.

Today, a flickr contact of mine posted an image of a similar fly, so I think I now have an identification...