This book provides for the first time an integrative analysis of the major drivers of decline and threats of insects and related arthropods in the Neotropical region. Thus, it is an urgent first step towards filling an information gap in this region. It identifies the main causes of decline, provides and discusses examples from the better-studied insect faunas to develop and advance principles and practical conservation management for the rich Neotropical insect faunas. The book is aimed at students, naturalists, environmental managers, and others who have training in entomology/insect ecology and can apply the results of surveys of key insect faunas to assess their vulnerability to environmental change and establish guidelines for their conservation.