In this book the text has been updated, with a view to conforming to the revised syllabi of various universities at undergraduate and postgraduate levels. Handbook of entomology have been discussed in an easy-to-understand manner by making use of ample diagrams, figures and tables with lucid explanations. One of the unique features of our book includes the discussion on the ecological aspects of various insect-control methods. It is extremely vital to know the implication of these control procedures on the total ecosystem and then devise an integrated pest management system. This book will prove useful not only for the university students but also for practicing agriculturalists and horticulturalists with its introductory but practical approach to common insect pest control.