Pheromone traps have been established at sites throughout Wisconsin to monitor late-season flights of fall armyworm moths. Counts from the trapping survey provide data on the timing of local moth flights and may be useful for planning field scouting activities. The results of the survey are presented below and will be updated weekly from late July through mid-September.
Moth Counts for the Week Ending August 21, 2025
County
|
Location |
Week 1
|
Week 2
|
Week 3 |
Week 4 |
Week 5
|
Week 6
|
Week 7
|
Adams
| Grand Marsh
| 0
| 3
|
| | | | |
Calumet
| Kesler
| 0
| 7
| 93
| |
|
|
|
Columbia
| Cambria
| 35
| 11
| 5
| | | |
|
Columbia
| Columbus
| 0
| 0
| 0
| | | |
|
Columbia
| Lodi L
| 2
| 3
| 0
| | | |
|
Columbia
| Lodi M
| 4
| 5
| 1
| | | |
|
Columbia
| Pardeeville
| 0
| 0
| 1
| | | |
|
Columbia
| Portage W
| 6
| 2
| 0
| | | |
|
Dodge
| Beaver Dam
| 40
| 5
| 0
| | |
| |
Dodge
| Leroy
| 45
| 53
| 45
| | |
| |
Dodge
| Rubicon
| 10
| 13
| 308
| | |
| |
Door
| Sturgeon Bay
| 117
| 8
| 88
| | | | |
Grant
| Lancaster 1
| 123
| 294
| 168
| | | |
|
Grant
| Lancaster 2
| 226
| 0
| 42
| | | | |
Green
| Brodhead
| 5
| 377
|
30
|
| |
| |
Monroe
| Monroe
| 29
| 4
| 1
| | | | |
Oconto
| Mountain
| 1
| 5
| 8
| | | |
|
Outagamie
| Grand Chute
|
| 0
| | | | | |
Ozaukee
| Fredonia
| 42
| 26
| 36
| | |
| |
Portage
| Stevens Pt
| 0
| | 0
| | | | |
Rock
| Clinton N
| 0
| 0
| 1
| | | |
|
Rock
| Janesville N
| 6
| 20
| 0
| |
| | |
Rock
| Janesville S
| 36
| 29
| 5
| |
| | |
Sauk
| Reedsburg
| 17
| 54
| 3
| | | |
|
Sauk
| Spring Green
| 175
| 73
| 69
| | | |
|
Sheboygan
| Oostburg
|
| 76
| 0
| | | | |
Sheboygan
| Wilson
| 219
| 263
|
438
| | | |
|
Trempeauleau
| Ettrick
| 22
| 33
|
| | |
| |
Walworth
| Delavan
| 4
| 61 | 9
| | | | |
Walworth
| Sharon
| 6
| 127
| 2
| | | | |
Waushara
| Almond
| 0
| 4
| | | |
| |
Waushara
| W Bloomfield
|
| 0
| | | | | |
Week 1 (Aug 1-7); Week 2 (Aug 8-14); Week 3 (Aug 15-21); Week 4 (Aug 22-28); Week 5 (Aug 29-Sep 4); Week 6 (Sep 5-11); Week 7 (Sept 12-18). *Trap counts represent a 14-day period.
