Control measures for SJS are recommended when the scale or their feeding blemishes have been found on fruit at harvest during the previous season. Examination of the bark and twigs during pruning may also be valuable in detecting infestations which are not otherwise apparent since populations are often irregularly distributed within orchards and may be hidden beneath loose bark in older trees. Pruning is also important in removing infested branches and suckers, as well as opening up the canopy to allow for better spray coverage in tree tops where SJS are often concentrated. On trunk and branches prior to fruit set Check beneath loose bark on older trees. Mid-season through harvest, spurs and fruit, especially stem and calyx ends.
Adult males Pink through petal fall.
Mid-season through leaf drop. Difficult to detect without pheromone traps. Trunk and branches, often beneath loose bark. On suckers, spurs, and fruit. Dormant and approximately 5 to 7 weeks after bloom, through leaf drop.