Second-Instar Trap-Jaw Ant Larva (IMAGE) North Carolina State University Caption These are the head and mouthparts of a trap-jaw ant 2nd instar larva. Credit Adrian Smith Usage Restrictions Photo credit must be given. 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.