![Trap-jaw ants show remarkable diversity in the length of the jaw and how wide it opens.](https://secure.caes.uga.edu/news/multimedia/images/5983/sturmygenys-web.jpg)
Evolution of the fastest jaws in nature: function before form in miniature trap-jaw ants
Trap-jaw ants are famous for having one of the natural world’s fastest movements, and a new study led by a University of Georgia graduate shows that the core mechanism that allows this speedy movement evolved multiple times within a single ant genus, leading to the spectacular diversification of mandible shape each time.