Eastern Boxelder Bug
MODERATEBoisea trivittata
Overview
All over these specific black walnuts with lots others having none on them. Anyone know why they’d be on walnuts like this?
- Type
- Insect
- Severity
- MODERATE
- Source
- iNaturalist
Symptoms
Geographic Spread
Treatments
Targeted Insecticide Application
Apply appropriate insecticide following label directions. Timing is critical — treat during the vulnerable larval or adult emergence stage for maximum effectiveness.
Biological Control Agents
Introduce or encourage natural predators and parasitoids. Options include releasing predatory beetles, parasitic wasps, or applying Bt (Bacillus thuringiensis) for caterpillar pests.
Infested Material Removal
Prune and destroy infested branches and plant material. Remove fallen debris that may harbor eggs or larvae. Dispose of material away from healthy trees.
Recommended Products & Tools
Helpful supplies for managing Eastern Boxelder Bug. Always read and follow label directions, and confirm a diagnosis before treating.
Knocks down soft-bodied pests like aphids, mites, and scale crawlers.
Smothers overwintering eggs and crawlers; dormant or summer rates.
Soil-applied protection taken up by the tree for season-long control.
Sharp, clean cuts to remove affected wood — a tree-care essential.
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Frequently Asked Questions
What is Eastern Boxelder Bug?
All over these specific black walnuts with lots others having none on them. Anyone know why they’d be on walnuts like this?
What are the symptoms of Eastern Boxelder Bug?
Where is Eastern Boxelder Bug currently found?
Eastern Boxelder Bug is currently active in Alabama, Colorado, Delaware, Georgia, Iowa, Idaho, Illinois, Indiana, Kentucky, Massachusetts, Maryland, Michigan, Minnesota, Missouri, North Carolina, North Dakota, New Hampshire, New Jersey, New Mexico, New York, Ohio, Tennessee, Texas, Utah, Wyoming. It has been reported in 25 total states across the United States.
How do I treat Eastern Boxelder Bug?
Treatment options for Eastern Boxelder Bug include: Targeted Insecticide Application, Biological Control Agents, Infested Material Removal. Treatment approaches may include chemical, biological, cultural, and mechanical methods depending on the severity and context.