The first time I saw some, several years ago, there were about 4 of them on my Trumpet Vine. They looked like mutant bees! I looked in my insect book, but didn't find any that looked just like them. I knew my son would know, but couldn't get him on the phone. I went to my near-by Audubon center to ask the naturalist and he told me what they were and my son later confirmed. That's when I learned that moths have fuzzy antennae and butterflies don't. Somehow, I had never known that. I've seen the moths several times since then and took a good pic of one on my false sunflowers 5 yrs ago. They are so cool!