Thanks for the correction. I've not found anything that looks just like it on the web. There is a wide variety in patterns in the various Crescent subspecies, but that looks the closest to it that I've seen so far.
Indeed, I think you've got it. Nice sleuthing. I note your link says "no record" for outside of the blue area. Well, your picture is the new record. You might consider contacting them about your range expansion discovery.