Reports received: 18 of 34 monitoring sites submitted data this week.

Trap catches this week:

• European corn borer (ECB-E): reported at 2 sites
• European corn borer (ECB-Z): reported at 1 sites
• Corn earworm (CEW): reported at 16 sites, 12 high enough to be on a 3, 4,5, or 6 day spray schedule
• Fall armyworm (FAW): reported at 4 sites
• Western bean cutworm (WBC): reported at 2 sites

This will be the last post of the season. I would like to thank all of the cooperators for helping to collect data this year. Please contact me with any questions or suggestions for improvements (mez4@cornell.edu).

Below are graphs of the moth flights for 2025 and 2024 for comparison. ECB-Z trap catch numbers were much higher in 2024 than in 2025. CEW numbers were similar through early August, but in 2024 there was a sharp increase that did not occur in 2025. Instead, numbers in 2025 rose steadily and peaked at an average of about 19, compared with a peak of 33 in 2024. FAW flight began later in 2025 than in 2024 but reached a higher peak, averaging 17 moths on September 16, while in 2024 the peak was only 6 moths in mid-August. WBC flights were similar across both years, with an early August peak of about 31 moths on average.

Average sweet corn trap catches from 5.27.25– 9.23.25.

Average sweet corn trap catches from 5.28.24– 9.24.24.

The SCPTN began in 1993, initially monitoring for ECB-E and ECB-Z. CEW and FAW were added in 1997, and WBC was included in 2010. The graphs below show population trends in New York over those years. Trapping locations vary from year to year as new cooperators join and others step back, so the graphs reflect general statewide trends rather than specific site data. From these graphs, it is clear that ECB populations have remained low for more than 15 years. WBC numbers have declined since peaking in 2023. CEW numbers dropped this past year, while FAW has shown a slight increase over the last two years, though still remaining well below average.

Average trap catches 1993-2025 for ECB-E and ECB-Z.

Average sweet corn pheromone trap catches 1993-2025 for CEW, FAW and WBC.

Table showing trap catch for 9.16.25 – 9.23.25.

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