The crawlers search until they find a suitable spot to feed from and then settle. The remaining immature stages do not move unless disturbed. They resemble the adults except for their smaller size. This scale is gray and dome like with flat margins. Dried specimens are dark brown.
Young females are slightly convex with a pattern of minute black spots.
Scales are usually brought into greenhouse situations with the introduction of infested plant material. Depending on the host, products containing malathion, diazinon, or carbaryl are usually effective. If applied correctly, oil insecticides are also effective. As in the use of all chemicals, consult the label or a database for crop registrations. Chemical applications should be used only when parasites are not economically effective.