Horticulture/Lecanium corni

European Fruit Lecanium Scale (Parthenolecanium corni, but often referred to as Lecanium corni), is a common pest affecting several genera of woody plants, including both food crops and ornamentals. Other common names include: brown apricot scale, brown elm scale, brown fruit scale, brown scale, European fruit scale, New York plum scale, peach scale, and yew scale.

Description
The scales are small, and dark brown, generally in large colonies.

Symptoms and Signs
Heavy infestations lead to weakening of the plant and dieback

Host plants

 * ../Acer/ (Maple)
 * ../Cornus/ (Dogwood)
 * ../Crataegus/ (Hawthorn)
 * ../Fagus/ (Beech)
 * ../Fraxinus/ (Ash)
 * ../Magnolia/
 * ../Malus/ (Apple)
 * ../Morus/ (Mulberry)
 * ../Prunus/ (Stone Fruits)
 * ../Quercus/ (Oak)
 * ../Rosa/ (Rose)
 * ../Salix/ (Willow)
 * ../Sassafras/
 * ../Thuja/ (Arborvitae)
 * ../Tilia/ (Linden, Basswood)
 * ../Ulmus/ (Elm)
 * ../Vaccinium/ (Blueberry)
 * ../Vitis/ (Grape)