An ant queen just gave birth to two different species, stunning scientists. Researchers studying Iberian harvester ants in Europe uncovered one of the strangest reproductive systems in the natural world. A single queen can lay eggs that hatch into two completely different species: her own, Messor ibericus, and another called Messor structor. The finding was especially puzzling because the colony was discovered on the Italian island of Sicily – about 621 miles (1,000 kilometers) away from the closest known population of Messor structor. Yet somehow, the queen was producing both species. Normally, each ant species keeps to its own genetic line. But millions of years ago, Iberian harvester ants lost the ability to produce their own workers. To survive, their queens began mating with Messor structor males, producing hybrid female workers that make up 99% of a colony. Later, evolution went a step further: the queens learned to clone the sperm of those males. That means a queen can now create “foreign” males from another species using only her eggs and stored sperm – a process scientists call sexual domestication. The result is astonishing. In the lab, researchers watched as one queen gave rise to both hairy Messor ibericus males and virtually hairless Messor structor males, each with distinct genomes. It’s the first known case of what scientists are calling xenoparity – reproduction that requires propagating the genome of another species through one’s own eggs.