The Tiger Swallowtail of the Eastern US is dimorphic. This is a dark female on wild daisies.
She will not live very long. Except for our migratory, Milkweed-loving Monarch butterflies, most do not live very long in their winged form. Much more life as caterpillars and pupae. The brief task of the winged form is to produce eggs, then die. Short, sweet, and lovely.