The functional anatomy of the egg and the nymphal morphology of the teak tingid,Pontanus puerilis Drake and Poor have been described. The outer surface of the exochorionic collar presents a series of serrations which serve to grip the plant tissue firmly. The principal and accessory aeropyles with their extension canals and the so-called “micropyles” all serve the purpose of respiration. The length of the column varies in accordance with the length of the exochorionic collar and on that basis two types of eggs ofP. puerilis have been recognised, viz., short operculate eggs that are deposited during the months of August-October and long operculate eggs, deposited during February. Total cessation of growth of the marginal tubercle of the metathorax; translocation of the meso and meta thoracic and 2nd abdominal tubercles on to the wing pads and the disappearance of the 3rd abdominal marginal tubercles in the 5th instar nymph are significant features.