I visited the Minnesota Zoo yesterday with my brothers and nephew. During our visit we took a walk through their butterfly exhibit. Here are some highlights.
Outside the exhibit they had these large and beautiful butterflies (kites?) hanging from the ceiling.
I think this one was called a Blue Wing.
This is another longwing - Julia Heliconian
Another of the longwings - Erato Heliconian
The exhibit also featured moths, but we saw only this Luna Moth on the ceiling screen.
More information on butterflies may be found at Butterflies and Moths of North America