Old World swallowtail at the Danube

The Old World Swallowtail is a butterfly of the family Papilionidae. The butterfly is also known as the common yellow swallowtail or simply the swallowtail . It is the type species of the genus ''Papilio'' and occurs throughout the Palearctic region in Europe and Asia; it also occurs across North America, and thus, is not restricted to the Old World, despite the common name.