Spying and Deceit

摘要

Broadcast signals can be "overheard" by unintended recipients. For example, alarm pheromones released by Solenopsis fire ants when fighting ants from other colonies attract unwelcome eavesdroppers: ant-decapitating flies, so named because these parasitic phorid flies lay their eggs in the heads of ants, which eventually fall off. One of these phorid fly species, Psendacteon tricuspis, might be introduced into the United States as a possible biological control of invasive fire ants.