Entries » Illinois Western Bean Cutworm Monitoring 2012
|Name||Illinois Western Bean Cutworm Monitoring 2012| Western
bean cutworm was first found in Illinois in 2004. Reports of
this insect have been increasing since then and the eastward
range expansion continues. Moths begin emerging in mid-June and
lay eggs on corn plants. Soon after hatch, larvae leave the
upper leaf surface and move to the whorl. Yound larvae will feed
on the leaves and tassels. As they mature, larvae begin to feed
directly on silks. As both corn and larvae mature, larvae move
into the ears and feed on developing kernels. Larvae are very
mobile and may infest plants in the same or adjacent rows.