In this book efforts have been made to discuss the life cycle and certain aspects of feeding and reproductive behaviour of Zygogramma bicolorata. Apart from life attributes, the book emphasizes on how the abiotic factors, like temperature and photoperiod and biological processes, viz. ageing, rhythmicity, multiple matings and interactions amongst species influence the physiological processes of feeding and/or mating behaviour of this beetle. Thus, the present book would not only solve the queries on the feeding and reproductive biology of Z. bicolorata but would also suggest ways and means to facilitate the mass multiplication of this beetle under laboratory conditions for its effective use in the management of Parthenium weed. We are quite hopeful that the present book would cater to the needs of post graduate students and research scholars in particular, and to the teachers, agriculturists and agricultural policy planning committees in general.