Ábrahám Levente – Farkas Sándor: Butterflies along the river Drava, 2008

Л characteristic butterfly of the Drava region is the southern festoon (Zerynthia polyxena) [4], with yellow-black wing pattern. There is no tail on its hindwings. Its adult specimens fly in springtime, in warm, sunlit areas and disturbed vegetation of the floodland. The caterpillars with yellow background coloration and orange warts feed exclusively on the leaves of birthwort. This host plant is a weed which can colonise only in floodland areas that are inundated from time to time, or on disturbed soil surface.The southern festoon is usually rare in the sub-Pannonian region; its most abundant populations occur along the floodlands of our large rivers.