Gaster Bending (IMAGE) University of California - Riverside Caption Using an action called gaster bending, Argentine Ants dab irritant chemicals onto their opponent's body. Credit University of California, Riverside Usage Restrictions None License Licensed content 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.