2016 Japanese beetle detections
The Oregon Department of Agriculture (ODA) trapped 373 Japanese beetles in the state, all in the Portland area:
- Portland International Airport and vicinity (Multnomah County), 3 beetles
- Swan Island (Multnomah County), 1 beetle
- Cedar Mill Area (Washington County), 369 beetles
The 2016 Japanese beetle catch is the largest in Oregon since the state started the Japanese beetle detection program in the 1940’s. Prior to 2016, the total number of beetles caught over the past 28 years (1988-2015) was 403. The beetles caught in 2016 represent 92% of all Japanese beetles caught in Oregon since 1988. We observed many live beetles feeding on roses and other plants In Cedar Mill and Bethany, indicating the presence of an infestation.
2017 Proposed Japanese beetle eradication project in Cedar Mill and Bethany
The proposed eradication program includes:
- One application of the granular pesticide Acelepryn® G is planned for April and May, 2017. Acelepryn® G is a low-risk insecticide that targets the larval stage of the Japanese beetle. It is applied to lawns and irrigated landscapes using hand held seed/fertilizer spreaders. No foliar spray treatments are proposed.
- Many Japanese beetle traps will be placed within and surrounding the proposed treatment area to monitor the infestation.
Detection traps will be placed throughout the state starting spring 2017.
Open house informational events
Public open houses will be held at:
- March 4, 2017: 9:30 am – 12:30 pm
The Leedy Grange Hall
835 NW Saltzman Rd.
Portland, OR, 97229
- March 6, 2017: 5:15 pm – 7:15 pm
The Cedar Mill Library
12505 NW Cornell Rd.
Portland, OR, 97229
Japanese beetle resources
The Oregon Department of Agriculture, in conjunction with USDA and other federal and state agencies, conducted an eradication program in the North and Northwest Portland area in 2016. Approximately 7,000 acres were treated in April and May with an aerial application of a biological pesticide Bacillus thuringiensis kurstaki to eradicate the Asian and European gypsy moth infestation. To view the area where the treatment took place please see the map link below.
ODA has completed the trapping program for the 2016 season. We did not detect any gypsy moths in the Portland area, indicating the treatment was a success. However, we caught six gypsy moths in other parts of the state in 2016:
- Vida, Lane County, 2 gypsy moths
- Grants Pass, Josephine County, 4 gypsy moths
Detection traps will be placed throughout the state starting this spring. No eradication is proposed.
Gypsy moth resources
2016 Asian Gypsy Moth Environmental Assessment (EA)
2016 Asian Gypsy Moth Treatment Map
A map that is frequently updated showing the 2016 AGM treatment progress. ESRI Online Map
Asian Gypsy Moth: Threat and Opportunity 2016
B.t.k. Information from the National Pesticide Information Center (NPIC)
Effects of Aerial Btk on Non-Target Lepidoptera Caterpillars
Gypsy moth awareness video
From the Washington Dept of Agriculture, this video includes 13 ways gypsy moths damage the ecosystem, the economy, and harm people. Also included, how to identify gypsy moth and eradication methods. YouTube Video
Gypsy Moth Eradication Program Overview
Basic information about gypsy moth eradication Document
Gypsy Moth in Oregon
Yearly summary report for Oregon's gypsy moth trapping and eradication program 2016 Summary Report
Gypsy Moth: A Destructive Forest Pest
Invasion of Gypsy Moth Caterpillars in Hanover Township, Pennsylvania
Oregon Gypsy Moth Detection Map (2015)
Oregon Health Authority: Btk Insecticide FAQs
Phenology of Butterflies and Moths in Oregon in relation to Asian Gypsy Moth eradication efforts
Report from the Technical Working Group in Response to the Asian Gyspy Moth Captures (Washington-Oregon 2015)
Support Letter from British Columbia for the 2016 AGM Eradication
Support Letter from the Northeastern Area Association of State Foresters for the 2016 AGM Eradication
Oregon participates in a federal program to monitor, and
suppress when necessary, grasshoppers and Mormon crickets. Even though not all
grasshopper species are pests, outbreaks can vary in their magnitude and
geographic expanse. Early intervention can dampen the severity of an outbreak
Grasshopper survey report
The 2015 Oregon grasshopper survey season showed a continuing increase in the grasshopper population which had been declined through 2013 from a high in 2011. An estimated 2.4 million acres across eastern Oregon were found to be economically infested. ODA and USDA-APHIS did not participate in any control efforts during 2015, though from various informal reports we believe there were several programs for treating privately held land.
Grasshopper & Mormon Cricket information-USDA
Grasshopper Report Summary (full) Document
Grasshopper Report Summary
Grasshopper Report Summary (brief) Document