2022 Iowa Moth Trapping Network Update: Week 2

April 14, 2022 8:16 AM
Blog Post

Cold weather has kept migratory moths out of Iowa through Week 2 of the trapping network. However, our cooperators have seen some native moths show up in their true armyworm traps. During week 2 of the Iowa Moth Trapping Network (April 3 to April 9), our cooperators reported only two total moths in traps around the state. This is a drastic reduction from what we saw last year when our cooperators reported over 140 total moths during the second week.

Week 2 report:

Both moths captured were black cutworms, one in Tama County on April 4 and one in Washington County on April 6. So far, no significant flights have occurred that indicate large populations of larvae are expected in a specific area. Figures 1 and 2 show the Week 2 trap reports for true armyworm and black cutworm, respectively.

TAW reports April 3 to April 9 2022
Figure 1. True armyworm moth captures from April 3 to April 9. The bold number indicates the total moth count for the week (for counties with multiple sites, only the site with the highest total moth count is reported), while the smaller number in parentheses is a running total of the moth count for the season; highlighted counties without numbers indicate that traps are placed but no reports have been received. Data is current as of April 13, 2022.

BCW reports April 3 to April 9 2022
Figure 2. Black cutworm moth captures from April 3 to April 9. The bold number indicates the total moth count for the week (for counties with multiple sites, only the site with the highest total moth count is reported), while the smaller number in parentheses is a running total of the moth count for the season; highlighted counties without numbers indicate that traps are placed but no reports have been received. Data is current as of April 13, 2022.

Follow the link to see the report from Week 1.

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