I saw a "bee" on my bee balm recently I cannot identify.  It's about the
length of three bumblebees, but does not seem to have a sectioned body.
It flies like a hummingbird.  The front half of the body is pale
brownish orange.  The aft end is an Indian Red, with a stripe of that
brownish orange, then the Indian Red again.  The very end of it is
squared off, and seems to look like a lobsteer's tail.
 
Any idea what this is??