Caterpillar Herbivory (image) Smithsonian Tropical Research Institute Caption The Rasta hornworm, Pseudosphinx tetrio, eats plants in the family Apocynaceae, and can consume three large leaves per day. Based on a new study insects that eat species belonging to the genera, Inga, in the bean family, Fabaceae, researchers conclude that the interactions between plants and the insects that eat them help to explain tropical biodiversity. Credit Smithsonian Tropical Research Institute Usage Restrictions Smithsonian Tropical Research Institute 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.