Dr Suzanne Koptur is Professor Emerita of Biological Sciences in the Institute of Environment, International Center for Tropical Botany, Florida International University. Her research focuses on understanding plant/animal interactions with a focus on mutualisms, especially plant antiherbivore defense and pollination. She is also involved in cultivation of native wildflowers for creation of butterfly gardens, ecological schoolyards, and habitat restoration for rare species.

Dr Robert J Marquis is Professor Emeritus in the Department of Biology and the Whitney R. Harris World Ecology Center, University of Missouri-St. Louis. His research focuses on the interactions between host plant traits and the insects associated with plant, including natural enemies of caterpillars. Both temperate and tropical systems have been the focus of his research. He and his students and collaborators also study the impacts of forest management on caterpillar populations, all against a background of changing climate.

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