Manduca and Geocoris (IMAGE) Max Planck Institute for Chemical Ecology Caption A freshly hatched tobacco hornworm larva (Manduca sexta) is attacked by a predatory bug of the genus Geocoris. Only a few hours before, the feeding caterpillar had -- catalyzed by a substance in its oral secretion -- changed the chemistry of the plant's "green" odor in such a way as to produce the new odor which attracts its own enemy; the change is to the plant's advantage as it has lethal consequences for the caterpillar. Credit Matthey Film, Germany 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.