(IMAGE) Kobe University Caption Using one of the antennae on its head, an ant accesses information provided by hydrocarbons on the body surface of another ant, enabling nestmate and caste recognition, and instruction about occupational tasks. Credit © 2004- Kobe University. All Rights Reserved. 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.