According to the embedded video: "This ant goes from 0-200 mph in 0.000015 seconds."Dracula ant's killer jaws are nature's fastest mover at 200mph
Tropical insect uses lethal speed of its spring-loaded mandibles to stun or kill prey
They're speaking of just the tips of the jaws, but still an impressive speed and acceleration.
Related video at https://www.youtube.com/watch?v=YNMIupWT4X4 .
Macro shots by Alex Wild: https://www.alexanderwild.com/Ants/Taxo ... -hGbzGbH/A