True Armyworm

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Pheromone traps have been established at sites throughout Wisconsin to monitor early-season ​migration flights of true armyworm moths. Counts from the trapping su​rvey provide data on the ti​ming of armyworm arrival into Wisconsin and are useful for plannin​g field scouting activities. The results of the 2022 survey are presented below and will be updated weekly through early June. Current multistate migration maps are available at Great Lakes and Maritimes Pest Monitoring Netw​ork (select TAW​​ tab) and True Armyworm Corn ipmPIPE.


Moth counts April 1-May 26, 2022​​

​​County
​Location​
​Week 1
​Week 2
​Week 3
​Week 4
​Week 5
​Week 6
​Week 7
​Week 8
​Adams
WI D​ells​
​0
​0
​0
​0
​1
​0
​0
​Barron
​Barron

​0
​0
​1
​0
​1
​0
​0
​Columbia
Pardeeville E
​0
​0
​0
​0
​3
​0
​0
​Columbia
​Pardeeville W
​​

​0
​0
​6
​24
​37
​7
​Dane
​Marshall

​0
​0
​3
​4
0​
​2
​2
​Dodge
​Lowell
​0
0​
​0
​0
​0
​0
​0
​0
​Fond du Lac
​Johnsburg

​0
​0
​1
​2
​2
​15
​61
​Manitowoc
Manitowoc




0 ​0
​0
​0
​Sheboygan
​Oostburg
​​



​1
​1
​1
​3
​Vernon
​Stoddard
​0
​0
​0
​0
​0
​3
​0
​1
Vernon
Viroqua
​0
​0
​0
​0
​1
​5
​3
​3

​Week 1 (April 1-7), Week 2 (April 8-14), Week 3 (April 15-21), Week 4 (April 22-28), Week 5 (April 29-May 5), Week 6 (May 6-12), Week 7 (May 13-19), Week 8 (May 20-26)​.​

True armyworm multistate maps for the 2022 season are also available at:
Great Lakes and Maritimes Pest Monitoring Netw​ork ​(select TAW​​ tab) ​
True Armyworm Corn ipmPIPE


​​​​​​​​​​​​​​<< Back to main Pest Survey page