(Limenitis archippus)

A frequenter of open, sunny, upland fields and wet meadows. They visit gardens with flowers such as Butterfly Bush, Purple Coneflower, asters, goldenrods, and milkweeds.

Until recently, Viceroy was thought to be an example of Batesian mimicry, whereby it gained protection from predators by looking like the unpalatable Monarch. However, since the Viceroy itself is unpalatable (from ingesting alkaloids from willows) it is a better example of Mullerian mimicry, which is a form of mutually beneficial convergence of 2 or more distasteful species whose predators learn to avoid them all.

I think they are beautifull.