This book is an outcome of research work carried out for five years in the Department of Zoology, Yogi Vemana University, Kadapa, Andhra Pradesh - India. This book consists of two chapters. Chapter 1 entitled as 'Effect of Climate change on Distribution, Migration & Protection of Butterfly species in plains & hill regions of Southern Andhra Pradesh - Eastern Ghats', candidate has presented study was conducted to record and identify butterfly diversity along with some tropical species relation with climate change and migration studies in the plains and hill regions of Eastern Ghats of Southern Andhra Pradesh. He also focused on several factors how climate change affects the butterfly diversity, and has its effect on the abundance and diversity on these butterflies for more than a year. The information presented in this work provides some of the basic information about the biology and diversity of butterflies that was required for conservation work. The second chapter entitled as 'Effect of Habitat destruction of host plants on butterfly abundency at plains & hill regions of Seshachalam Reserve Forest - Eastern Ghats'.