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Cyclicity

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The only Alberta record is a single specimen collected July 18, 2001.
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Distribution

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Widespread in eastern North America; in Canada from Newfoundland west to extreme northeastern Alberta.
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General Description

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"A medium-size moth (approx. 2.7 –3.833 cm wingspan). Forewings blue-grey moth with rust and black markings. The basal area and the area in and around the reniform rust brown, area before and lower part of reniform black. Orbicular large, clear blue grey. The claviform spot is a contrasting small black or brown filled wedge. Very similar to T. rugosa and in particular T. tacoma, but both lack the rust-brown on the forewings found in legitima. There are also differences in the male genitalia."
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Habitat

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Occurs in meadows, clearings, edges, gardens. etc.
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Life Cycle

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Adults are nocturnal and come to light, but also fly and nectar during cloudy days. There is a single annual brood.
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Trophic Strategy

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Crumb (1956) reported it was a general feeder, and Handfield (1999) lists over 20 genera of plants. Preferred hosts include slender grasses in the genera Muhlengergia and Agrostis (Godfrey). An occasional pest of garden vegetables, tobacco, grasses and other plantings (Covell, 1984).
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Trichordestra legitima

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Trichordestra legitima, the striped garden caterpillar, is a moth of the family Noctuidae. The species was first described by Augustus Radcliffe Grote in 1864. It is found in eastern North America, from Newfoundland to Florida, west to Texas, north to Saskatchewan.

The wingspan is 25–39 mm. Adults are on wing from June to September. There is one generation per year.

The larvae feed on wide range of woody and herbaceous plants, including asparagus, aster, bean, broomrape, cherry, clover, dogbane, goldenrod, grasses, milkweed, mustard, pea, pokeweed, raspberry, tobacco, violet, willow and yarrow. Preferred hosts include various slender grasses, including Muhlenbergia and Agrostis.

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Trichordestra legitima: Brief Summary

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Trichordestra legitima, the striped garden caterpillar, is a moth of the family Noctuidae. The species was first described by Augustus Radcliffe Grote in 1864. It is found in eastern North America, from Newfoundland to Florida, west to Texas, north to Saskatchewan.

The wingspan is 25–39 mm. Adults are on wing from June to September. There is one generation per year.

The larvae feed on wide range of woody and herbaceous plants, including asparagus, aster, bean, broomrape, cherry, clover, dogbane, goldenrod, grasses, milkweed, mustard, pea, pokeweed, raspberry, tobacco, violet, willow and yarrow. Preferred hosts include various slender grasses, including Muhlenbergia and Agrostis.

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