An example is the parasitic wasp Ichneumon eumerus, which parasitizes the butterfly Phengaris rebeli.
The Myrmica schencki is parasitized by the Phengaris rebeli larvae, which release chemicals that trick the Myrmica schencki ants into believing that the butterfly larvae are ant larvae and should be brought back to the ant brood.
The Phengaris rebeli is a butterfly of the Phengaris genus that parasitizes the G. cruciata plant as a source of nutrition.