Stunning mystery moth and mystery solved

The images above and below, printed here courtesy of http://www.Palemale.com
were photographed yesterday in the Shakespeare Garden. They reveal another clearwing moth, captured while sipping nectar -- yes, that's his proboscis you see below the antennae.

But what is its species? I've spent more hours than I'm willing to admit looking through photographs on two major moth websites: The Moth Photographer's Group and BugGuide.

I haven't come up with an answer. My first thought was that it is a Maple Callus Borer Moth - Synanthedon acerni. But it doesn't look quite right.Now I've written an SOS to my favorite moth expert, Hugh McGuinness. I'll let you know what he says. [McGuinness is the hero of a chapter of Central Park in the Dark called "Miss Jones, you're beautiful"]

In the meanwhile, you can try to solve the mystery yourself by clicking on the links below. They will take you to the clearwing family -- Sessiidae--on each site.

http://mothphotographersgroup.msstate.edu/slow.php?plate=06&size=l&sort=h

http://bugguide.net/node/view/161/bgimage


Hugh McGuinness quickly answered:
Hi Marie,

It's Hemaris thysbe, a Sphinx Moth.

Hugh