I found this little one perched on the outside of my house. During the summer, other bugs that looked exactly like this one were gathered in masses on the fruit of our Mountain Ash tree (a Sorbus sp). I came up with Banasa dimidiata by browsing through Bug Guide, but I am reluctant to place this one there without other opinions on the ID first.

(I chose to use dimidiata instead of dimiata because, according to the guide page, that is what =v= and Dr. Thomas use.)