Introduction: host plant choice and feeding ecology of insects

This special issue includes a series of 11 papers that focus on host preference and feeding ecology of insects, and how these two aspects affect herbivore–plant interactions. Factors are included such as host invasions, herbivore phenotypes, and agronomic practices on herbivory in multiple feeding guilds, as well as in multiple trophic levels. This issue also includes substantial details on how best to study the changes in plant–insect interactions and potentially utilize them in the context of pest management.