Branco, M., Centro de Estudos Florestais (CEF), Instituto Superior de Agronomia (ISA), University of Lisbon, Lisbon, Portugal
Battisti, A., DAFNAE-Entomology, University of Padua, Padua, Italy
Mendel, Z., Department of Entomology, ARO, The Volcanic Center, Bet-Dagan, Israel

In this chapter we concentrate on the main invasive species which feed on the foliage, by consuming leaves or inducing galls, and which affect both native and non-native tree species. We provide details on their biology, invasion routes, host tree species, damage to native and non-native trees and control strategies. © Springer International Publishing Switzerland, 2016.