The West Coast Lady is one of three North American species of brush-footed butterflies known colloquially as the "painted ladies". The West Coast Lady is distinguished from the other 2 ladies by its lack of eyespots on the hindwings (the others have them). Its upperwing coloration has the purest orange of the three; especially the American Painted Lady is usually quite reddish.
Fun Fact The common name for the family is the Brushfooted Butterflies. This strange name is because the first pair of legs are significantly reduced, sometimes to mere stubs, and look like little brushes.