The moths are fairly large with a wingspan of 1.5-2 inches. They are often detected in pheromone monitoring traps just after the passage of these weather systems. The arrival of the adult moth is aided by weather fronts moving from southern to northern areas. and Mexico every year from early May to mid-June. Adult black cutworms are a moth that migrates into Michigan from the southern U.S. The larva of black cutworm causes sporadic damage, primarily stand loss, to young crop seedlings. Read on to learn more about this early-season pest of sweet corn. For estimates of when flights may have occurred in your area, refer to the weather-based models at InsectForecast. Purdue University Extension and University of Illinois Extension have caught the pest in varying numbers across their respective states. Low numbers of black cutworm moths are being caught in parts of Michigan, with moths detected in Montcalm and Lenawee counties.
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