The most comprehensive single source available on leafhoppers and planthoppers, written to be accessible also to investigators new to these insects. Covers their taxonomy, morphology, behavior, population dynamics, interactions with microbes including transmission of plant pathogens, and key aspects of their biological control such as host-plant resistance and parasites. The leafhopper and planthopper faunas associated with three important crops are presented in concert with the evolution of host plant and insect.