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From a short distance, the infested boxwood appears unhealthy with a dingy silvery color. If only one surface of the leaf is affected resulting in a more or less transparent ‘window’, we talk about window feeding. DAMAGE. Spider mites cause similar damage to aphids with extensive leaf stippling. Stippling appears as whitish dots on the leaf upperside due to the cell contents, including the green chlorophyll, being removed by the lacebug or leafhoppers on the underside. Leafminers are the larvae of small black flies. This causes pale stippling and bleaching that can become very obvious on the upper leaf surface by mid to late summer. High winds and heavy rains can drive lace bugs to lower leaves, so the stippling damage may be heaviest in the lower canopy. The damage done to the leaves by the sucking, scraping and piercing can be detected as the characteristic damage of silvery shining areas, the silvery leaf stippling, scarring and leaf distortion. Clarke, D.P. Sometimes a spot on a leaf or berry can be caused by an insect or a biological plant pathogen, such as a fungus or bacteria, and other times the spot can be produced by human or environmental factors. Heavily infested plants become unsightly and vitality is reduced. Lace bug adults and nymphs feed on the underside of leaves by sucking fluids from plants' photosynthetic tissues. Controlling Common Garden Pests. Many pests of the garden hide in plant debris. Cleaning up refuse around the property limits the hiding spaces for many insects. Springtail damage Acording to Hemp Diseases and Pests, springtails such as the garden springtail, bourletiella hortensis "causes stippling of leaves, much like spider mites." These are generally more of a pest outdoors, but they can follow your plants inside. Later, these small spots merge and the leaves turn yellow. Later today I hope to have pics up. ).Pupae of the whitelfy are visible on the adaxial leaf surface. Adults and nymphs suck plant sap from the underside of leaves. McPartland, J.M., R.C. Leaf Stippling (tiny spots) Fine stippling (pattern of tiny white/yellow dots) of leaves early in season, followed by general grayish, dingy, unhealthy appearance. Usually these animals inject saliva for the external digestion of the … Boxwood mites prefer feeding on young leaves, but damage is most obvious on second- and third-year leaves. The fly lays its eggs in the leaf and the larvae feed their way through the leaves … Stippling of a kava leaf (Piper methysticum) associated with feeding damage caused by the fringe guava whitefly (Aleurotrachelus sp. Blistering of Young Leaves Boxwood Psyllid. Watson, 2000. On sycamore, the damage is more noticeable along leaf veins, as both lacebug and leafhopper nymphs seem to … Symptoms/Damage. Cupped Leaves. Damage or disorders of grapevines can arise from a wide array of causal factors. This causes the leaf to appear stippled with minute white spots. 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