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.
Peruse this page for more information on winter cutworm, or comment below if you have questions or concerns. Thanks for reading.