Papilio machaon larva, butterfly of the family Papilionidae, Italy, Europe

European Swallowtail Butterfly (Papilio machaon) resting on Buddleia flower, captive

European Swallowtail (Papilio machaon) final instar larva or caterpillar, feeding on Burning Bush (Dictamnus albus), a very unusual foodplant, Bulgaria