Yay! Here is another new moth to add to my list. I don't think that I have ever seen a Ctenucha moth before. They are diurnal, so you'd think I'd have witnessed one flying around over the years. They are common in the northeast US and southern Canada, so Maine is a perfect habitat for them. The iridescent blue coloration, on the first segment of the thorax, alerted me to this moth's presence on the black-eyed Susan flower.