Insect-Plant Biology uncovers the highly intricate antagonistic as well as mutualistic interactions that have evolved between plants and insects. The authors discuss the operation of these mechanisms at the molecular and organismal levels and explicitly put these in the context of both ecological interactions and evolutionary processes. This multidisciplinary approach will appeal to students in biology, agricultural entomology, ecology, and indeed anyone interested in the principles underlying the relationships between the two largest groups of organisms on earth: plants and insects.