Click for image of adult

by

UC-Davis

Adults:
The adult beet armyworm is a mottled gray or brown in color with a pale spot near the center of each wing. The rear wings are white with dark veins and have a fringed border. The wing span of the adult is about 1 inch (25 mm).

Click for image of eggs

by

UC-Davis

Eggs:
The white to pink colored eggs are ribbed, spherical in shape and peaked on top. Eggs are deposited in masses usually on the underside of the leaves of the host plant. The egg mass has a fuzzy appearance due to scales and hairs from the moth. egg masses contain about 80 eggs with the female laying about 600 in a 3-7 day period. Eggs hatch about 2-3 days after they are laid.

Click for image of larvae

by

UC-Davis

Larvae:
Larvae are pale green to dark greenish-black in color with a dark head. Each larva has a black stripe down its back with several light stripes along each side of its body. A dark spot can sometimes be seen on the second body segment behind the head and above the second pair of true legs. Larvae will reach about 1 1/4 inch in length or about 30 mm.

Pupae:
Pupae are light brown with dark brown along the abdominal segments.