Lep Monitoring Network Update –Trap Count Updates

Black cutworm (BCW), true armyworm (AMW) and European corn borer (ECB) moths continue to be monitored for across Ohio to identify areas with high populations. Black cutworm moth currently has the highest traps count averages across the state. In addition, BCW is being reported in the majority of monitoring counties; however, all counties are reporting an average of less than 10 moths per county (Figure 1). Counties that have had high trap numbers of BCW should plan to monitor for BCW larvae after corn is planted, especially in fields with a lot of broadleaf weeds such broadleaf weeds, such as chickweed and purple dead nettle. For more information about BCW please visit: https://aginsects.osu.edu/sites/aginsects/files/imce/ENT_35_14%20BCW.pdf

Black cutworm moth map: May 23 - 29, 2022

 

Diagram

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Figure 1. Average black cutworm (BCW) moths captured from May 23rd to May 29th. The large number indicates the average moth count for the week and the small number in parentheses is the total traps set up in the county.

True armyworm

True armyworm numbers have declined over the past week. Only two counties reported AMW moth catches from May 23 – 29, including Harding and Van Wert counties (Figure 2). Both counties had averages of less than 2 moths per county.

True armyworm moth map: May 23 - 29, 2022

Figure 2. Average true armyworm (AMW) moths captured from May 23rd to May 29th. The large number indicates the average moth count for the week and the small number in parentheses is the total traps set up in the county.

European corn borer

This is second week of monitoring for European corn borer (ECB). Both ECB-IA and ECB-NY are being monitored with delta wing traps in the field. Eleven counties monitored for ECB this past week. Currently only Hardin and Clark counties are reporting ECB moth activity, all less than an average of 3 moths per county (Figure 3).

European Corn Borer moth map: May 23 - 29, 2022

Figure 3. Average European corn borer (ECB) moths captured from May 23rd to May 29th. The first number indicates the average ECB-IA followed by a comma and then the average ECB-NY moth count for the week. The small number in parentheses is the total traps for each species set in each county.