Extension > Garden > Diagnose a problem > What's wrong with my plant? > Deciduous Trees > Honeylocust > Holes in bark
Honeylocust > Branches > Holes in bark
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Honeylocust borer
Agrilus difficilis
- “D” shaped exit holes found in declining branches
- Branches larger than ½ inch diameter die back from larvae feeding under bark
- Removal of bark reveals frass filled galleries
- Wet spots due to sap-stains on bark around infestation sites
- Adults are 5/16- ½ inch long, bullet-shaped with characteristic whitish to yellowish bands on abdomen
- Adults make notches along leaf margins while feeding
- More information on Honeylocust borer
