The head structure of different Strumigenys species (video) Okinawa Institute of Science and Technology (OIST) Graduate University Share Print E-Mail Loading video... Caption Trap-jaw ants show remarkable diversity in the length of the jaw and how wide it opens. Credit "Functional innovation promotes diversification of form in the evolution of an ultrafast trap-jaw mechanism in ants." by Booher DB et al. (2021). PLOS Biology, CC-BY Usage Restrictions CC-BY Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.