Carrot beetle—Ligyrus gibbosus
Carrot beetles infest flowers such as dahlia, iris, lily,
and sunflower. Adults are reddish brown, 1/2-inch long,
and feed both above and below ground. Larvae
are up to 1-1/4 inches long, white to bluish, and
have a dark head.
Damage
Foliage yellows and wilts. Plants may be stunted, fall over, or die from root-feeding beetles. The basal stems or leaves may be chewed.
Solutions
Exclude adults, which fly at night to lights. Eliminate decaying vegetation that harbors adults around plants.
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