This new book, Insect Diversity and Ecosystem Services, published in two comprehensive volumes, is an innovative work on insects and their impact on the ecosystem, describing their enormous free ecosystem services. The volumes cover a range of topics related to insects including their role in environmental pollution, their use in sustainable agricultural services, and the industrial, forensic, and medical applications of insects and their pure products. The book also covers the entomological and molecular aspects of insects, identifies the gaps in the research, and looks at integrated management strategies for pests.