Forestry is wealth of our country. Forest plant protection is chronic problem and necessary for sustainable development of our country. Indian Ghats are amongst world hot spots of biodiversity and home for many endamic, rare and endangered species of plants and animals. The Lepidopteran pests in their larval stage and in some cases adults are destructive to forest plants Larvae cause damage by boring stems, fruits, seeds, roots and defoliating and mining leaves of forest trees. Therefore, knowledge on their identification, biodiversity, biology, nature of damage, host plants and control is must to protect and conserve forest wealth. The book contain seven chapters. First is devoted for general introduction to forestry Western Ghats, and Lepidopteran moths. Second is devoted for collection and preservation of pest moths. Third chapter deals with biology of Lepidoptera (Moths and butterflies). Fourth is related to pest Lepidoptera and their control measures. Fifth embodies biodiversity of pest moths of forest. Sixth is devoted for check list of moths along with host plant records and seasonal abundance while, seventh chapter refers to bibliography referred. The book is stimulatory and useful guide to students, teachers, environmentalists, ecologists, entomologists and silviculturist in India and abroad.