Lep Monitoring Network Update #7 – Last Black Cutworm and True Armyworm Report

This is our seventh and final week of monitoring for black cutworm (BCW) and true armyworm (AMW). After this week, we will switch lures to western bean cutworm (WBC) and corn earworm (CEW). In this newsletter article, we are reporting findings from May 25^th through May 31^st. This past week, temperatures finally warmed up across Ohio, and although we are past our peaks for BCW and AMW, there are still some remaining adults making appearances across the state.  

Black cutworm

Over the past week, we monitored 42 traps in 15 counties, and our statewide average decreased from 7.6 moths last week to 5.6 moths this week. Counties that had averages of 7.0 moths or more are over our threshold level and encouraged to scout their fields in the next two weeks for BCW larvae. These counties remained in northwest Ohio and included Lucas and Williams (Figure 1).