In this book an attempt has been made to provide correct and quick identification of common insects of Asia, America, Africa and Australia for the beginners as well as graduate students of zoology and entomology by telling about the insects. Collected and to those of given in this guide and this field and class-room both for the identification. This guide will stimulate nonzoologists/ entomologists too who have colourful flowers and beautiful insects. This book is also useful to those who are not biologist but general people but watch/see insects found around them and have curiocity to know about them just like colourful flowers in a large part of the globe. The insects have been classified up to orders. For more detailed classification student must consult advanced books of entomology.