Tobacco Hornworm Caterpillar (IMAGE) Boyce Thompson Institute Caption The tobacco hornworm has served as an important model for insect biology since the 1950s, due to its large size. Credit Dave Pape 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.