Appearance
The wingspan is 65–75 mm. There is one generation per year with adults on wing from late June to August. They nectar at deep-throated, light colored flowers such as phlox or milkweed . Adults typically fly at dusk. They are easily attracted to light.Naming
The species was first described by Jacob Hübner in 1823.Food
The larvae feed on many plants in the family Lamiaceae, such as ''Lycopus'', ''Mentha'', ''Monarda'' and ''Salvia'' species. Larvae have green, black, or brown coloration.References:
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