In South East France, Zerynthia rumina (a butterfly belonging to the family Papilionidae and Lepidoptera order) can be confused with the Southern Festoon (Zerynthia polyxena), but the two can be told apart by the presence of blue on the hindwing of the southern festoon.
Zerynthia rumina, the Spanish festoon, is a butterfly belonging to the family Papilionidae. Lepidoptera Order: In south east France it can be confused with the southern festoon (Zerynthia polyxena). The two can be told apart by the presence of blue on the hindwing of the southern festoon. North Africa, the Iberian Peninsula and southern France. 
