Little is known about Formica ereptor. Its unique parasitic life cycle depends on particular neighbouring ant species for its survival and so there are few habitats where it thrives. Gene Stealers are nomadic; new queens fly great distances from their birth colony, then spend the first year of their lives travelling back home across the land.
Over the course of her journey, the queen will harvest the DNA of other ant species she encounters so she may bring new diversity to the birth colony. She also makes use of the assimilated species along her journey, allowing her nomadic tribe to adapt to the dangers of the changing environment.