As populations increase, webbing is often spun over foliage and flowers. These mites are most likely to be found on the underside of leaves and in the flowers. The mites piercing-sucking mouth parts cause curling of leaflets from outside inward by creating small depressions in young leaves. Damaged flower buds sometimes will not open or open only to be distorted Scale Many different species of scale insects can occur on greenhouse plants. Common greenhouse species in Oklahoma include black scale, hemispherical scale and brown soft scale.
Crawlers then insert their mouthparts into a leaf and start forming a shell.
They remain there for several molts while losing their legs during the first molt. Live young or eggs are produced under the female s body and are protected by the hard shell. Large scale infestations can deform tender plant parts, and as with mealybugs, aphids, and whiteflies, scales excrete honeydew.