ArmyAnts (1 of 3) (image) Harvard University Caption Army ants are group predators that overwhelm large arthropods and other social insect colonies. Here, a raiding swarm of Dorylus molestus is attacking a grasshopper at Mt Kenya. Credit Daniel Kronauer/Harvard University Usage Restrictions None 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.