This week, there were Noctua pronuba moths found in traps throughout the valley. Although we are not specifically trapping for them at this time, their presence should be considered a cautionary tale. As we know from years past, where there is one, there are many.

This moth is easily recognizable by 3 main features:

  • Large size (± 2 inch wingspan)
  • Bright yellow hindwing that can only be seen in flight
  • Thick black border on hindwing

Adult moths are not a problem. In fact, they have been in Oregon for 15 years. However, in 2015 there was an outbreak of larval N. pronuba, common name: WINTER CUTWORM. Yes, these larvae are active (hence feeding) throughout the fall and winter months. They move in groups, like armyworms, and can be very destructive.

PHOTO CREDIT: C. Difonzo

Scroll down for more information on winter cutworm, or comment below if you have questions or concerns. Thanks for reading.

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