Scale insects are sucking insects from the order Homoptera. They are relatively small but vary in form and appearance. Some look like little gray or brown pinhead dots. Others resemble tiny oyster shells.
Most scales have waxy or woolly coverings. While the young they can move around. But, they spend most of their lives attached to the leaves, stems, or branches of host plants.
Scales attack many kinds of plants both indoors and out. From small potted plants to large orchards, groves, and shade trees.
Scale insects are divided into two groups :
Armored Scale: These scales have distinct, hard, separable shells or scales that cover their delicate bodies.
Armored scales reproduce by eggs and stay under the protection of the mother’s shell. The young soon start to crawl around, find a location to insert their thread-like mouthparts in a leaf or bark, and start sucking the sap.
Tortoise or Soft Scale: These scales have a hard shell, but the shell is not separable from the body.
Soft Scale has a protective shell with a generally smooth brown, black or mottled body. Reproduction is either by eggs or live young.
Scale insects are among the few pests succulents occasionally encounter. When these tiny insects appear, the plant may become damaged and more susceptible to diseases. Succulents are typically hardy plants,