Basics of biocommunication in insect-plant interactions: role of chemical signals / T.N. Ananthakrishnan.- Plant volatiles in relation to biocommunication / S.S. Krishna.- Pheromone technology: problems and opportunities in exploring biocommunication systems in insects / S. Narasimhan.- Chemistry, technology and application of pheromones as components of IPM / T. Ravindranathan.- Modality and relevance of biocommunication in the biological control of insects / T.N. Ananthakrishnan.- Sensillar diversity and insect biocommunication / P. Usha Rani.- Neuroethological approaches in insect-plant interactions / Alok Sen.- Pheromone production in moths: control by intrinsic and extrinsic factors / Ashok K. Raina.- The evolution of communication as exemplified by the honey-bee queen pheromones / Raghavendra Gadagkar.- Cell-to-cell communication / R.J. Rabindra and J.B. Kennedy.