These scales, which are generally larger than the armored scales, do not produce a hard, waxy covering over their body. They may produce a soft covering that cannot be separated from the body. The reproductive potential of soft scales is tremendous, and they can produce large amounts of honeydew. I have included this insect because it is commonly encountered and it is one of the largest of all scales. This scale is a serious pest of yellow poplars and magnolias.
Heavy populations can kill branches or entire plants.
The name of this insect is derived from the mealy or waxy secretions that cover the body. Sometimes, mealybugs appear to resemble small pieces of cotton. Unlike scales, the adults and all immatures can move around on the plant. Like soft scales, mealybugs can produce honeydew. Mealybugs can become very troublesome in greenhouses or on field-grown ornamentals.