Elm Leaf Beetle

Natural Habitat

Deciduous forests and urban areas near elm trees

Diet & Feeding

Adults and larvae both feed on the foliage of various species of Elm trees, causing skeletonization of leaves

Behavior Patterns

Adults emerge in spring to lay eggs on the underside of leaves; larvae feed for several weeks before pupating at the base of the tree; they often enter buildings in autumn to seek overwintering sites

Risks & Benefits

Primarily a nuisance pest when entering homes; can cause significant defoliation and stress to elm trees but does not pose a direct health risk to humans

Identified on: 6/15/2026