New and Emerging Insect Pests

List Compiled by Todd Murray et. al, October, 2007
New and Emerging Pests Recently Reported by PPDEN Collaborators
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Pest Name: Dusky Wireworm, Agriotes obscurus
First reported in WA: 2000 – First US Record
Potential Impacts: Larvae prefer to feed on cereal crops but will feed on many species of economically important crops. Larvae have caused significant damage in some agricultural settings in Western Washington
Areas(s) found: Whatcom, Snohomish, King, Piece, Thurston, Lewis, Cowlitz Counties
Brief description: WSU DDDI sample 92 was submitted from King County in 2005 for confirmation of ID
Links to resources:
WSDA Pest Survey Pages: http://whatcom.wsu.edu/pestsurvey/
Sustaining the Pacific Northwest Newsletter: http://csanr.wsu.edu/whatsnew/SPNW-v4-n2.pdf
WSU Extension contact(s): Todd Murray, WSU King County Extension, Eric LaGasa WSDA

Pest Name: Bordered Plant Bug, Largus cinctus
First reported in WA: 2003 – First Washington State Record
Potential Impacts: Feed on a wide range of row crop and ornamental plants.
Areas(s) found: Lewis County
Brief description: WSU DDDI sample 70 submitted in 2004 documented unusually large numbers of samples originating from Lewis County
Links to resources:
WSU Extension contact(s): Eric LaGasa WSDA

Pest Name: Viburnum Leaf Beetle, Pyrrhalta viburni
First reported in WA: 2004 – First Washington State Record
Potential Impacts: Serious defoliator of many Viburnum species.
Areas(s) found: Whatcom, Skagit Counties
Brief description: WSU DDDI sample 63 and sample 105 submitted in 2004 and 2005 respectively documented first state and county records for this pest. Southern Skagit County is the furthest southern record for this insect.
Links to resources:
WSU Whatcom County: http://whatcom.wsu.edu/ag/homehort/pest/VLB.htm
WSU HortSense: http://pep.wsu.edu/HortSense/scripts/query/displayProblem.asp?tableName=plant&problemID=767&categoryID=1
WSU Extension contact(s): Todd Murray, WSU King County Extension

Pest Name: Large Yellow Underwing, Noctua pronuba
First reported in WA: 2004 – First Washington State Record
Potential Impacts: Feed on a wide range of plants and could cause damage to turf.
Areas(s) found: Most Washington State Counties
Brief description: WSU DDDI sample 107 submitted in 2005 documented the first County record in Snohomish.
Links to resources:
WSU Extension contact(s): Eric LaGasa WSDA

Pest Name: Large Yellow Underwing, Noctua pronuba
First reported in WA: 2004 – First Washington State Record
Potential Impacts: Feed on a wide range of plants and could cause damage to turf.
Areas(s) found: Most Washington State Counties
Brief description: WSU DDDI sample 107 submitted in 2005 documented the first County record in Snohomish.
Links to resources:
WSU Extension contact(s): Eric LaGasa WSDA

Pest Name: Apple Clearwing Moth, Synanthedon myopaeformis
First reported in WA: 2006 – First North American Record
Potential Impacts: Bark-feeding moth of apple and other fruit trees.
Areas(s) found: Whatcom
Brief description: WSU DDDI sample 185 submitted in 2006 documented the consultation with outside specialists for confirmation of the species identification.
Links to resources:
WSU Whatcom County: http://whatcom.wsu.edu/ag/homehort/pest/synanthedon.htm
WSU Extension contact(s): Eric LaGasa WSDA

Pest Name: Rhyparochromis seed bug, Rhyparochromis vulgaris
First reported in WA: 2000 – First North American Record
Potential Impacts: Aggregate in large numbers in homes and other structures
Areas(s) found: Whatcom, Skagit, Snohomish, King, Peirce, Thurston, Lewis, Cowlitz, Garfield, Franklin
Brief description: WSU DDDI sample 81 submitted in 2005 documented confirmation of the species identification and first county record for King County. WSU DDDI sample 166 documented the first county record in Whatcom. WSU DDDI sample 619 documented the first county record in Garfield. WSU DDDI sample 736 documented the first county record for Franklin County.
Links to resources:
WSDA Pest Survey Pages: http://whatcom.wsu.edu/pestsurvey/158RhyparochromisAndRagliusAlertAndUpdate06.pdf
WSU Extension contact(s): Eric LaGasa WSDA

Pest Name: Raglius seed bug, Raglius spp.
First reported in WA: 2002 – First Washington State Record
Potential Impacts: Aggregate in large numbers in homes and other structures
Areas(s) found: King, Peirce, Yakima
Brief description: WSU DDDI sample 111 submitted in 2005 documented confirmation of the species identification and first Washington State Record. WSU DDDI sample 216 documented the first county record in King. WSU DDDI sample 295 documented the first county record in Yakima.
Links to resources:
WSDA Pest Survey Pages: http://whatcom.wsu.edu/pestsurvey/158RhyparochromisAndRagliusAlertAndUpdate06.pdf
WSU Extension contact(s): Eric LaGasa WSDA

Pest Name: Dogwood sawfly, Macremphytus tarsatus
First reported in WA: 2005 (?) – First Washington State Record
Potential Impacts: Defoliator of Dogwood Trees
Areas(s) found: King, Whatcom
Brief description: WSU DDDI sample 1187 submitted in 2007 documented tentative species identification.
Links to resources:
WSU Extension contact(s): Eric LaGasa WSDA