Kermes scale is an insect pest of red and white oak trees, as well as pin and Gambrel oaks. It is completely infested, and shedding leaves rapidly so we're concerned. Branches infected with scale may appear damaged, and, without treatment, can die and fall from the tree. Currently, these insects are in their crawler stage feeding on the sap of the tree’s leaves. There are a few ways you can get rid of scale on branches. Red and Pin oak Kermes scale have the same life cycle, while the bur oak scale is different. Asked January 31, 2015, 5:11 PM EST. A severe scale infestation delays the leafing out of deciduous oaks … Some scale insects in the genus Parthenolecanium are commonly called lecanium scales because at one time they were included in the genus Lecanium.Female oak lecanium scales, Parthenolecanium quercifex, are up to 1/4 inch in diameter. Common scales and their tree and shrub hosts are listed in Tables 1–3. Treating kermes scale on plants is attained by a variety of methods. I have had three different tree care companies over to look at our Kermes Scale problem on the oak tree in our front yard. Coffee scale is a major agricultural pest in coffee crops. On bur oak, the scales … Pin oak kermes scale and Bur oak kermes scale are the most common species found on oak trees. They can cause dieback, stunted growth, and produce honeydew which in turn causes sooty mold issues. Kermes scale are aggressive sap-sucking pests that can cause significant damage in oak trees. Heavy infestations may cause leaf yellowing, stunting, severe plant stress, and … Replied February 13, 2015, 11:29 AM EST. Once you know the life cycle, you can begin to get a handle on what needs done to protect your tree. Scale insects belong to a large group of sucking insects that attack a wide variety of trees and shrubs. These scales flatten themselves against tree branches to feed. Many trees will have small numbers of scale each year; they need monitoring but probably not treatment. KevO. Read on to learn about kermes scale control. Kermes Scale treatment. Lecanium scale is a group of common soft scale insects that feed on the sap from shade trees and woody ornamentals. The pin oak Kermes scale starts feeding in the spring (usually April to May) as nymphs, or “teenagers”. Answered by KevO Other species of wax scales include tree dwellers like the cottony maple scale (Pulvinaria innumerabilis) or the calico scale (Eulecanium cerasorum). Scales in other families include important pests of cactus, elm, oak, sycamore, and various conifers. Oak tree scale-how to treat? Generally, they are divided into two categories, armored (hard) and soft scale. Kermes Scale Life Cycle. Psuedococcidae Pinning down kermes scale life cycle is a difficult task. If left uncontrolled, one or two major infestations can kill your tree. Asked July 28, 2015, 4:28 PM EDT. Armored scales and soft scales are the most common types (or families). 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