As sunflowers near maturity and harvest approaches, it is common to spot beetles of all sizes on sunflowers.
There may be a lot of these beetles, but they are not considered sunflower pests. There are two beetles that are seen actively feeding on sunflower heads but cause no damage to the crop: bumble flower beetles and sap beetles.
Bumble flower beetles measure about 1/2 to 5/8 inches long and come in different colors ranging from yellowish brown to dark brown with black spots on their forewings.
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