Western Bean Cutworm Trap Network Summary 2025
Moth counts registered during the June to mid-August flight period decreased sharply in 2025. The western bean cutworm trap network captured an average of 107 moths per trap (7,803 moths in 73 traps), less than half of 227 moths per trap average (15,685 moths in 69 traps) collected in 2024 when a 20-year survey record was set. The annual flight peaked July 18 to 31 across southern and central Wisconsin and July 25 to August 14 in the north. Six sites recorded counts of 250 or more moths (versus 23 sites in 2024), while the highest individual catch for the 11-week trapping period was 866 moths at Cameron in Barron County. Although the exact cause of the steep decline in moth numbers is unknown, deeper-than-normal frost depths last winter (up to 36 inches in some parts of the state) may have contributed to increased mortality of western bean cutworm pre-pupae overwintering in the upper 3-9 inches of the soil profile.
Moth Counts for the 2025 Season
County |
Location |
Week 1 |
Week 2 |
Week 3 |
Week 4 |
Week 5 |
Week 6 |
Week 7 |
Week 8 |
Week 9 |
Week 10 |
Adams
| Grand Marsh
| 0
| 0
| 0
| 2
| 0
| 21
| 45
| 15
| 12
| |
Barron
| Cameron
| 0
| 1
| 0
| 0
| 2
| 5
| 109
| 376
| 314
| 59
|
Barron
| Chetek
| 0
| 0
| 0
| 0
| 0
| 0
| 130
| 133
| 66
| 11
|
Brown
| Greenleaf
| | | | | | | 13
| 45
| | |
Calumet
| Sherwood
| | | 0
| 7
| 0
| | 6*
| 16
| 18
| 30
|
Chippewa
| Eagle Point
| 0
| 1
| 0
| 0
| 0
| 0
| 229
| 49
| 50
| 14
|
Chippewa
| New Auburn
| 0
| 0
| 0
| 0
| 0
| 0
| 104
| 63
| 40
| 2
|
Columbia
| Arlington
| 0
| 0
| 2
| 1
| 0
| 10
| 17
| 24
| 1
| 3
|
Columbia
| Cambria
| 1
| 0
| 6
| 0
| 0
| 23
| 65
| 11
| 1
| 5
|
Columbia
| Columbus
| 0
| 0
| 0
| 0
| 0
| 1
| 1
| 0
| 0
| 0
|
Columbia
| Lodi L
| 1
| 0
| 2
| 1
| 2
| 10
| 19
| 8
| 1
| 0
|
Columbia
| Lodi M
| 1
| 0
| 0
| 0
| 0
| 8
| 28
| 2
| 3
| 0
|
Columbia
| Pardeeville
| 0
| 0
| 0
| 0
| 3
| 79
| 60
| 17
| 4
| 5
|
Columbia
| Portage W
| 1
| 0
| 0
| 1
| 2
| 45
| 114
| 0
| 2
| 2
|
Dane
| Sun Praire E
| |
| | | | 18
| 33
| 14
| 2
| 3
|
Dane
| Sun Prairie N
|
|
| 3
| 6
| 1
| 8
| 34
| 4
| 1
| 4
|
Dodge
| Beaver Dam
| | | |
| 2
| 2
| 4
| 2
| | 0
|
Dodge
| Leroy
| 0 | 0
|
| 2*
| 2
| 1
| 63
| 56
| 23
| 4
|
Dodge
| Rubicon
| 0
| 0
| 0
| 0
| 0
| 1
| 4
| 11
| 4
| 2
|
Dodge
| Watertown
| |
| 1
| 2
| 2
| 53
| 52
| 16
| 8
| 0
|
Dodge
| Waupun
| | | 0
| 2
| | 13
| 89
| 23
| 10
| 10
|
Door
| Sturgeon Bay
| | | | 1
| 0 | 1
| 83
| 117
| 89
| 36
|
Grant
| Lancaster 1
| 0
| 2 | 6
| 5
| 12
| 27
| 19
| 5
| 8
| 4
|
Grant
| Lancaster 2
| 0
| 0
| 12
| 4 | 4
| 8
| 1
| 8
| 0
| 8
|
Green
| Brodhead
| 0
| 0
| 0
| 9
| 14
| 11
| 0
| 1
| 6
| 0
|
Green
| Monroe
| 1
| 0
| 0
| 0
| 6
| 32
| 12
| 1
| 1
| 0
|
Jefferson
| Cambridge
| 0
| 4
| 0
| 0
| 1
| 4
| 3
| 1
| 1
| 1
|
Jefferson
| Lake Mills
| 0
| 1
|
|
| 14
| 250
| 160
|
| | |
Juneau
| Hillsboro
| | | | | | 7
| | 20*
| 2
| |
Juneau
| Hustler
| | 0
|
|
| 0 | 5
| 20
| 6
| 2
| |
Juneau
| Lemonweir
| | 0
| | 1*
| 0
| 13
| 113
| 26
| 3
| |
Juneau
| Lyndon Station
| | 0
| | | 1
| 7
| 44
|
| 3
| |
Juneau
| Mauston
|
| 0
| | | 2
| 8
| 34
| 21
| 2
| |
Langlade
| Bryant
| | | | | 0
| 0
|
| 48*
| 50
| |
Manitowoc
| St Nazianz
| | | |
| 1
| 8
| 19
| 2
| 24
| 31
|
Marathon
| Wausau
| 0
| 0
| 0
| 0
| 0
| 16
| 63
| 33
| 21
| 6
|
Marathon
| Wausau E
| 0
| 0 | 0
| 0
| 0
| 0
| 12
| 11
| 15
| 0
|
Marinette
| Crivitz
| | 0
| 0
| 0 | | 0
| 11
| 13
| | 69*
|
Oconto
| Mountain
| 0
| 0
| 1
| 1
| 1
| 2
| 36
| 157
| 76
| 25
|
Oconto
| Oconto
| | 0
| 1
| 1
| 0
| 0
| 23
| 38
| 2
| 0
|
Oconto
| Pulaski
| |
| 0
| | 0
| 3
| 112
| 6
| | 38*
|
Oconto
| Suring
| | 0
| 0
| 0
| 1
| 0
| 20
| 2
| | 9*
|
Outagamie
| Grand Chute
| | | 0
| 2
| 0
| 4
| 10
| 18
| 3
| |
Ozaukee
| Fredonia
| 0
| 0
| 0
| 2
| 1
| 7
| 16
| 39
| 10
| 2
|
Pepin
| Durand
| | 0
| | 0*
| 1
| 10
| 158
| 43
| |
|
Portage
| Stevens Point
| 8
| 9
|
| 5
| | 4
| 8
| 3
| | 6*
|
Racine
| Rochester
| | | 1
| 4
| 2
| 64
| 16
| | | |
Richland
| Lone Rock
|
| 0
| 0
| 0
| 5
| 8
| 12
| 1
| 1
| |
Richland
| Muscoda
|
| 0
| | 1*
| 7
| 57
| 6
| 3
| 0
| |
Richland
| Richland Cnt N
|
| 0
| | 0*
| 0
| 1
| 2
| 0
| 0
| |
Richland
| Richland Cnt S
|
| 0
| | 1*
| 0
| 1
| 5
| 0
| 0
| |
Rock
| Beloit W
| | | | | | 36
|
| | | |
Rock
| Clinton N
| 3
| 1
| 0
| 1
| 4
| 36
| 34
| 11
| 5 | 1
|
Rock
| Janesville N
| |
|
| 1
| 0
| 24
| 11
| 1
| 0
| 0
|
Rock
| Janesville S
|
| | | 3
| 1
| 72
| 25
| 4
| 1
| 0
|
Rusk
| Strickland
| 0
| 0
| 0
| 0
| 0
| 0
| 12
| 51
| 31
| 6
|
Rusk
| Sumner
| 0
| 0
| 0
| 0
| 0
| 0
| 16
| 87 | 27
| 4
|
Sauk
| Baraboo
| | | | 1
| 0
| 0
| 20
| 5
| 0
| |
Sauk
| Reedsburg
| 0
| 0
| 0
| 4
| 1
| 51
| 93
| 43
| 14
| 7
|
Sauk
| Reedsburg N
|
| 0
|
| 1*
| | 2
| 23
| 5
| 0
| |
Sauk
| Spring Green
| 0
| 0
| 0
| 8
| 32
| 47
| 28
| 4
| 1
| 1
|
Shawano
| Gresham
| | | 1
| 1
| 0
| 0
| 52
| 52
| 38
| |
Sheboygan
| Oostburg
| | |
|
| 4
| 13
| 27
| 20
| 27
| 4
|
Sheboygan
| Sheboygan
| 0
| 0
| 6
| 4
| 1
| 8
| 21
| 72
| 29
| 18
|
Trempealeau
| Ettrick
| 0
| 0
| | 0*
| | 8*
| 23
| 6
| 11
| |
Walworth
| Delavan
| 2
| 0
| 2
| 3
| 1
| 6
| | 5*
| 2
| 4
|
Walworth
| Delavan 2
| | | 5
| 1
|
| | | | | |
Walworth
| East Troy
|
| 0
| 0
| 0
| 2
| 16
| |
| |
|
Walworth
| Sharon
| 2
| 2
| 5
|
| 2
| 21
| 68
| 16
| 9
| 3
|
Waushara
| Almond
| 1
| 1
| 0
| 1
| | 4
| 4
| 4
| 4
| |
Waushara
| Hancock
| 0
| 0
| 0
| 2
| 0
| 14
| 35
| 13
| 10
| 6
|
Waushara
| W Bloomfield
| | | 0
| 0
| 2
| 5
| 38
| 28
| 0
| |
Winnebago
| Omro
| 0
| 0
| 0
| 0
| 0 | 11
| |
| | |
Wood
| Marshfield
| 0
| 1
| 0
| 0
| 1
| 12
| 23
| 9
| 2
| 0
|
Week 1 (Jun 13-19); Week 2 (Jun 20-26); Week 3 (Jun 27-Jul 3); Week 4 (Jul 4-10); Week 5 (Jul 11-17); Week 6 (Jul 18-24); Week 7 (Jul 25-31); Week 8 (Aug 1-7); Week 9 (Aug 8-14); Week 10 (Aug 15-21); *14-day period.