identifying a moth
Thanks for your questions and photos. Moth identification is not my forte, so to answer I would go to resources and try to find a match. Better yet, since you saw the moth, you can use the same resources to identify the moth and learn about it.
The "Moth -- Identification guide" on the internet is especially easy to use. It has you check answers to ten simple questions about the moth and then leads you to a conclusion. You can access the site by clicking on this link: http://www.discoverlife.org/mp/20q?guide=Moth
Once you have identified the moth, you can follow additional links to learn more about the moth.
Another approach is to look at the image gallery on a site called "Butterflies and Moths of North America". Or you can share your photo with that site and they will identify it for you for free. To access that resource, click on this link: http://www.butterfliesandmoths.org/identify
I hope you find these sites useful.