Pesticides lead serious problems like pollutions, health hazards, pest resistance, secondary pest outbreak, etc. Therefore, biological control is widely accepted at global scenario as an effective alternative for pesticidal use and as eco-friendly pest control method. Therefore, newer and recent trends of biological insect pest control are given in this book. The book contains 16 chapters under which biocontrol agents like braconids, Ichneumonids, tachinids, chalcids, ladybird beetles, carabids, lace wings, grasshoppers, hemipterans, weevils and vertebrates such as picies, amphibians and birds are discussed with respect to their diversity and their role in pest management. Emphasis is given on biological control of mosquitoes, mulberry and sugarcane pests and some commonly occurring insect pests. Thus, the book is extremely useful for farmers, students, teachers, scientists and industrialists.