page_title: Lepidosaphes ulmi
hierarchical_section_title: Lepidosaphes ulmi
caption_attribution_description: English: Lepidosaphes ulmi (Oystershell Scale) on Ceanothus
context_page_description: Lepidosaphes ulmi also known as apple mussel scale or oystershell scale is a scale insect that is a pest of trees and 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.
context_section_description: Lepidosaphes ulmi also known as apple mussel scale or oystershell scale is a scale insect that is a pest of trees and 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.
caption: Lepidosaphes ulmi on Ceanothus in England
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