Insects have been studied across the globe for decades. This book includes some of the vital pieces of work being conducted across the world, on various topics related to entomology. It strives to provide a fair idea about this discipline and to help develop a better understanding of the latest advances within this field. Included in this book are lucid explanations about important topics such as evolution of insects, systematics of social and pre-social insects such as ants, termites, wasps, etc. It aims to equip students and experts with the advanced topics in this area. This book is highly recommended for graduate and post graduate students, and academicians pursuing entomological studies and associated disciplines.