Army Cutworm has how many generations per year?

• A. Two generations per year
• B. Three generations per year
• C. No generations per year
• D. One generation per year

Answer: (D)

The concept being tested is how many generations a pest completes in a year (voltinism). Army Cutworm is typically univoltine, meaning it completes one life cycle per year in most rangeland environments. Eggs are laid in spring, larvae feed through early summer, then pupate and emerge as adults to start the next cycle the following year. Cold winters and typical climate conditions limit development enough that a second full generation doesn’t usually fit within one calendar year in these areas. So, for standard rangeland pest management contexts, one generation per year is the expected pattern. In unusually warm, very favorable microclimates, more generations could occur, but the common management-focused understanding is one generation per year.