«Termites appeared some 150 million years ago while the social Hymenoptera appeared about 100 million years ago, so this discovery of a hydrocarbon as a royal - recognition pheromone in termites appears to predate its use in social insects,» Schal said.
In some socialinsects, the males have just one chance to impregnate their queen — which they also use to spoil their rivals» chances by killing off their sperm.