Pacific Northwest Insect Management Handbook

Rose (Rosa)-Western spotted cucumber beetle

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Image related to Rose (Rosa)-Western spotted cucumber beetle
Western spotted cucumber beetle
Diabrotica undecimpunctata undecimpunctata Mannerheim
Adult female adult
© Ken Gray Insect Image Collection
Image related to Rose (Rosa)-Western spotted cucumber beetle
Western spotted cucumber beetle
Diabrotica undecimpunctata undecimpunctata Mannerheim
Immature on host
© Ken Gray Insect Image Collection
Image related to Rose (Rosa)-Western spotted cucumber beetle
Western spotted cucumber beetle
Diabrotica undecimpunctata undecimpunctata Mannerheim
Adult female adult
© Ken Gray Insect Image Collection
Image related to Rose (Rosa)-Western spotted cucumber beetle
Western spotted cucumber beetle
Diabrotica undecimpunctata undecimpunctata Mannerheim
Egg(s) on host
© Ken Gray Insect Image Collection

Diabrotica undecimpunctata

Pest description and crop damage Yellowish green beetles with black spots. Feed on blossoms.

Management-chemical control

See:

Chemical Control of Nursery Pests

For more information

PNW Nursery IPM: Western spotted cucumber beetle (http://oregonstate.edu/dept/nurspest/western_spotted_cucumber_beetle.htm)

Kaur, N. (Ed.). 2024 Pacific Northwest Insect Management Handbook.
© Oregon State University.

Use pesticides safely!

  • Wear protective clothing and safety devices as recommended on the label. Bathe or shower after each use.
  • Read the pesticide label—even if you’ve used the pesticide before. Follow closely the instructions on the label (and any other directions you have).
  • Be cautious when you apply pesticides. Know your legal responsibility as a pesticide applicator. You may be liable for injury or damage resulting from pesticide use.

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