Dailey O'Brien, Dawn
Some of the more common oyster-shaped scales insects seen in the New York region include Oystershell Scale (Lepidosaphes ulmi), Euonymus Scale (Unaspis euonymi) Winged Euonymus Scale (Lepidosaphes yanangicola), Japanese Maple Scale (Lopholeucaspis japonica), and Maskell Scale (Lepidosaphes pallida). Learn to differentiate among and recognize these peculiarly shaped pests based on their appearance and hosts.
Cornell University Department of Plant Pathology and Plant-Microbe Biology
leaf yellowing; premature leaf drop; branch dieback; decline; winter injury; armored scale
Previously Published As
Excerpted from Branching Out IPM Newsletter (2017), Vol. 24 No. 2