With the beginning of sap flow in the spring, the scales start to feed. Adult males, if they are present in the population, emerge in the spring. They are incapable of feeding and live but a short time. There is one generation per year. During growth the body is soft and plastic, but at death becomes a hard, brown shell, fastened loosely to the bark, and serves as a covering for several hundred white eggs.
Immature scales are light brown, smaller, and more flattened than mature females.
Ornamental and Lawn Pest Control .