 Western yellowstriped armyworm, immature larval form Western Yellowstriped
Armyworm Mature caterpillars are 50 mm long with velvety black stripes on top and yellow stripes along the sides of the body. They have an inverted white “Y” on the front of the brown head capsule. Adult moths are gray- or brown-mottled “miller” moths. The caterpillars feed on leaves during the day and can defoliate entire plants. Host plants: peas, beans, lentils, alfalfa, sugarbeets, potatoes.
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