2021 Iowa Moth Trapping Network Update: Week 7

May 20, 2021 11:59 AM
Blog Post

Reported captures for both species in the trapping network were down from previous weeks. During Week 7 of the Iowa Moth Trapping Network, our cooperators reported 60 total black cutworm (BCW) and 22 true armyworm (TAW) moths.

Week 7 report:

The TAW moths reported during Week 7 were captured sporadically throughout the state (Figure 1), while BCW activity was statewide (Figure 2). Most of the moths were reported on May 10 for both species. No new significant flights of black cutworm occurred during Week 7.

TAW reports May 9 to May 15 2021
Figure 1. True armyworm moth captures from May 9 to May 15. The bold number indicates the total moth count for the week, while the smaller number in parentheses is a running total of the moth count for the season; highlighted counties without bold numbers indicate that traps are placed but no reports have been received. Some counties have multiple sites; therefore, data is only reported for the site with the highest count during the week. Data is current as of May 20, 2021.

BCW reports May 9 to May 15 2021
Figure 2. Black cutworm moth captures from May 9 to May 15. The bold number indicates the total moth count for the week, while the smaller number in parentheses is a running total of the moth count for the season; highlighted counties without bold numbers indicate that traps are placed but no reports have been received. Some counties have multiple sites; therefore, data is only reported for the site with the highest count during the week. Data is current as of May 20, 2021.

These updates are typically a week behind. Stay up-to-date by visiting https://corn.ipmpipe.org/insects/ to see live mapping from Iowa, Wisconsin, and Illinois.

Follow these links to see the reports from Week 1, Week 2, Week 3, Week 4, Week 5, and Week 6.  

Surrounding states also monitor and report BCW and TAW captures. If you live near the state border, it may be beneficial to check these resources periodically. More resources may be available than what is listed here:

 

Author: 

Ashley Dean Education Extension Specialist I

Ashley is an education extension specialist for field crop entomology at Iowa State University. She coordinates the Iowa Moth Trapping Network, develops educational resources for field crop pests in Iowa, and aids in the research efforts of the