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

burning bush dictamnus false larva bulgaria gas plant albus flowers european rutaceae eastern european caterpillars wildlife swallowtial east european nature east papilionoidea developed countries vertical papilio final instar lepidoptera bulgarian flora stage feeding white dittany foodplant flower metamorphosis bush papilioninae flowering insect sapindales developed country dittany fraxinella papilionini eastern europe east europe machaon false dittany verticals caterpillar eastern europe papilionidae swallowtail butterfly burning