Coccidae, commonly known as scale insects, are a family of small, sap-sucking insects found on various plants. They are characterized by their protective coverings, which can appear as waxy or hard shells. These insects can be harmful to plants, as they feed on plant sap, potentially leading to stunted growth and other health issues. There are over 2,000 species of Coccidae, and they can be found worldwide. Some species are important in agriculture, as they can affect crops and ornamental plants. Control methods often include natural predators, insecticidal soaps, and horticultural oils to manage their populations effectively.