Introduction: Ecological Importance of Insect Feeding.- Form and Function of Insect Mouthparts.- Fluid-Feeding Mouthparts.- Suspension and Filter Feeding in Aquatic Insects.- Theme and Variation in the Development of Insect Mouthparts.- The Early Evolution of Biting-Chewing Performance in Hexapoda.- The Generalized Feeding Apparatus of Cockroaches: A Model for Biting and Chewing Insects.- Physical Determinants of Fluid-Feeding in Insects.- Hierarchical Microstructures and Functions of the Lepidopteran Proboscis Cuticle.- Comparative Functional Morphology of Ant Mouthparts and Significance for Liquid Food Intake.- From Chewing to Sucking via Phylogeny - from Sucking to Chewing via Ontogeny: Mouthparts of Neuroptera.- Structure and Evolution of Mouthparts in Coleoptera.- What¿s on the Menu: Floral Tissue, Pollen or Nectar? Mouthpart Adaptations of Anthophilous Beetles to Floral Food Sources.- Evolution of the Multifunctional Mouthparts of Adult Vespidae.- Superlong Proboscises asCo-Adaptations to Flowers.- Morphogenesis of Piercing Stylets in Hemiptera.- The Fossil Record of Insect Mouthparts: Innovation, Functional Convergence and Association with Other Organisms.