Black Light Traps

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Pest Survey Program cooperators across t​he state maintain black light traps to monitor moth flights as an early warning of potential pest problems. Insect counts reported each week can alert growers to the emergence, abundance, and seasonal occurrence of a variety of nocturnal agricultural pests. The results are presented below and will be updated weekly through August.​

​Counts for the Week Ending September 2, 2021​​​​​


CountyLocationBcwCelCewDcwEcbForScwTawVcw​Wbc
ColumbiaArlington0057000004
ColumbiaPardeeville0361000323300
DodgeBeaver Dam0204011000
Fond du LacRipon          
GrantPrairie du Chien          
LangladeAntigo00080445000
ManitowocManitowoc          
MarathonWausau          
MonroeSparta          
RockJanesville          
WalworthEast Troy20077020000
WoodMarshfield1010025400
Key to insects:  Bcw = Black cutworm;  Cel = Celery looper;  Cew = Corn earworm;  Dcw = Dingy cutworm;  Ecb = European corn borer; For = Forage looper;  Scw = Spotted cutworm;  Taw = True armyworm;  Vcw = Variegated cutworm;  Wbc = Western bean cutworm. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​