Extension > Garden > Diagnose a problem > What insect is this? > Trees and shrubs > Beetles, bugs, ants, and other insects without obvious wings - 1/3 inch - 1/2 inch long > Bronze birch borer

Bronze birch borer

Agrilus anxius

Whitney Cranshaw, Colorado State University

Description: 1/3 to 1/2 inch long. Slender, body with copper/bronze head and wing covers.

Where/When: Feeds on leaves of birch trees. Present June and July.

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