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Horticulture/Lepidosaphes ulmi
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Oystershell Scale Oystershell scale on young blueberry.JPG Insect Lepidosaphes ulmi Hemiptera Incomplete Nymph through adult Crawlers
Lepidosaphes ulmi also known as oystershell scale are ../Scale Insects/ that is a pest on woody plants. The small insects attach themselves to bark and cause injury by sucking the tree's sap, this metabolic drain on the plant may kill a branch or the entire tree.
Description
White scales.
Symptoms and Signs
Scales are clearly visible.
Ecology
Host plants
../Acer/ (Maples)
../Cornus/ (Dogwoods)
../Hydrangea/
../Ilex/ (Hollies)
../Lonicera/ (Honeysuckles)
../Salix/ (Willows)
Control
Can be plucked off if the infestation is caught early. Imidicloprid Neem and oil on crawlers
References
Colorado State University Cooperative Extension Fact Sheet