Dogbane beetles are brightly colored leaf beetles commonly found on dogbane plants and milkweed relatives. Their metallic blue and green coloration makes them one of the most visually striking beetles in North America.
Quick Facts
- Scientific Name: Chrysochus auratus
- Family: Chrysomelidae
- Habitat: Fields, gardens, and roadsides where dogbane plants grow
- Diet: Leaves of dogbane and related plants
- Status: Minor plant pest
Identification
Dogbane beetles are small oval beetles with a brilliant metallic sheen that shifts between blue, green, and copper tones. Their bright coloration serves as a warning to predators because they accumulate toxic chemicals from the plants they feed on.
They are part of the broader group of beetles.
Distribution
Dogbane beetles occur throughout much of North America wherever host plants are present.
Life Cycle
Eggs are laid near host plants. Larvae feed on roots while adults feed on leaves.
Pest Status
They rarely cause significant plant damage and are generally considered part of natural ecosystems.
Prevention
- Remove host plants if populations become excessive
- Encourage natural predators
Control
Control is rarely necessary because dogbane beetles rarely cause significant damage.