Female moths lay eggs on the undersides of leaves and hatched larvae feed on plant foliage, and then pupate in the soil. They then pupate in the soil and emerge as adults. In the spring, larvae begin to feed on roots and plant stems. About 0.75 inch long.Ĭutworms overwinter as larvae in the soil or under plant debris. Pupa:Dark brown to orange in color with two spines on one end. Most cutworms curl into a “C” shape when disturbed and during the day, are usually found in dirt clods or just below the soil surface. Larva:Dull gray to brown caterpillars with black stripes or spots, and up to 2 inches long when full grown. Depending on the species, eggs are laid singly or in irregular clusters of 30-360 eggs on leaves or stems, or near the base of the plant. Average wingspan ranges from 1.25 to 2.12 inches.Įgg:Extremely small spherical eggs are white or pale yellow when first laid, changing to brown before hatching. Cutworms DescriptionĪdult:Cutworm moths are brown or dark gray with front wings that have irregular bands or spots and lighter-colored hind wings. As they grow, they are more likely to feed on entire leaves or cause irregular patches of feeding damage. DamageĪrmyworm larvae feed in colonies and cause skeletonized leaves. Larval feeding from the second generation may be seen until early October before larvae enter the pupal stage to overwinter. Hatched larvae feed for 5 to 8 weeks before pupating in the soil. ![]() Adult moths emerge from March to July to mate and lay eggs. ![]() Pupa: Armyworm pupae are about 0.75 inch long and reddish-brown in colorĪrmyworms overwinter as pupae in the soil. ![]() Larva: Armyworm larvae are about 1.25-1.5 inches long and range in color from olive green, light green, and yellow, gray with dark markings, and yellow with dark gray or black markings. Beet Armyworm, Bertha Armyworm, Yellow Striped Armyworm ()īlack Cutworm and Variegated Cutworm ()Ĭaterpillar Feeding Damage on Lettuce ()Ĭaterpillar Feeding Damage on Lettuce DescriptionĪdult: Armyworm moths have a wingspan of about 1.25-1.5 inches and are mottled gray and brown in color with gray or tan colored markings depending on the species.Įgg: Beet armyworm eggs are pale green to pink, ridged, and are found in a mass covered with gray cotton-like material.
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