Investigation of insect pathogens is vital to the understanding of biocontrol and insect management within an ecosystem. Faster and more accurate methods of identification and diagnosis have become possible with the implementation of molecular techniques. Advances in genomics and genetic engineering make this manual the most up to date handbook on insect pathogens, with the latest information on methods used to unravel the genomes of pathogens. The book is divided into four sections: Identification and Diagnostics, Evolutionary Relationships and Population Genetics, Genomics, and Genetic Engineering. It is essential reading for those studying and researching at the forefront of molecular science and biological management.