Javascript is not enabled in your browser.
This will prevent some of our website from working properly.
Please enable scripting for the best web browsing experience, and review
the Privacy Policy to learn about our use of browser cookies and user-submitted data.

Updated 4/14/09

Exotic Pest Survey
List of Exotic Species of Concern:
Introduced, Established and Threatening Washington State

For more information, e-mail us or call (360) 902-2063.

This table lists the exotic species newly established in Washington State in recent years, most of which are moderate or serious pests in their native range. Also listed here are exotic species periodically introduced and eradicated, exotic plant pests established in the region and threatening Washington and other exotic species surveys. Linked resources include WSDA Surveys and Reports, extension websites, bulletins (EB, PLS), research documents, and management information from regional universities. New information will be added as it becomes available.

WSDA Surveys and Reports

Exotic Plant Pests New to Washington State Since 1985 (Listed by year of first detection) Compilation Date: 13 October 2008
Common Name & Scientific Name	Organism Type	Commodities / Crops Affected	Detection Record Status (New to ___)	WSDA Reports	Other Publications and Links
2008
Eurasian noctuid moth Hecatera dysodea (D. & Schiff.)	Flower and seed feeding moth	Lettuce and milk thistle	Washington State
European hardwood ambrosia beetle Trypodendron domesticum L.	Leaf feeding sawfly	Timber and ornamental trees	United States
European pine sawfly Neodiprion sertifer	Leaf feeding sawfly	Ornamental trees and shrubs	Western U.S.	In Prep
2007
Daylily midge Contarinia quinquenotata (Loew)	Leaf feeding fly	Daylilies	Western U.S.	In Prep	Garden Friends & Foes
Dogwood sawfly Macremphytus tarsatus	Leaf feeding sawfly	Ornamental trees and shrubs	Western U.S.	In Prep	PNW Nursery IPM
2006
Apple clearwing moth Synanthedon myopaeformis Haliday	Bark feeding moth	Fruit and ornamental trees	United States	WSDA Survey	Garden Friends & Foes
Wrinkled dune snail Candidula intersecta (Poiret)	Plant feeding snail	Fruit trees and many crops	Washington State		PNW Nursery IPM
2005
Longneck field slug Deroceras panormitanum (L. & P.)	Plant feeding slug	Many plants and flowers	Washington State
Vineyard snail Cernuella virgata (Da Costa)	Plant feeding snail	Grain, grasses, ornamentals	Western U.S.
Conifer bark tortrix Cydia coniferana (Saxesen)	Bark boring moth	Timber and ornamental trees	North America	WSDA Survey
2004
Large yellow underwing Noctua pronuba (Linnaeus, 1758)	Root and leaf feeding moth	Turf and row crops	Western U.S.
Viburnum leaf beetle Pyrrhalta viburni (Paykull)	Leaf feeding beetle	Ornamental trees and shrubs	Western U.S.		Hortsense, PNW Nursery IPM, Garden Friends & Foes
Heather thrips Ceratothrips ericae Haliday	Leaf and flower damaging thrips	Many plants and flowers	United States
Apple fruit moth Argyresthia conjugella (Zeller)	Fruit feeding moth	Apples (fruit and ornamental)	Western U.S.
2003
Bordered plant bug Largus cinctus (Schf.)	Leaf and vegetable feeding moth	Row crops and ornamentals	Washington State	In Prep
2002
European fruit tree tortrix Archips podana (Scopoli)	Leaf and fruit feeding moth	Fruit trees and ornamentals	United States	WSDA Survey
2000
Cereal leaf beetle Oulema melanoplus L.	Leaf feeding beetle	Grain, grasses, ornamentals	Washington State		WSU Info, WSU Flyer, WSU Bionomics
Dusky wireworm Agriotes obscurus L.	Seed and root feeding beetle	Row crops and ornamentals	United States	WSDA Report	Garden Friends & Foes, WSU Info
European poplar shoot borer Gypsonoma aceriana (Duponchel)	Shoot boring moth	Poplars and cottonwood	North America	WSDA Report
Lined click beetle Agriotes lineatus L.	Seed and root feeding beetle	Row crops and ornamentals	United States	WSDA Survey	Garden Friends & Foes, WSU Info
1999
Large European crane fly Tipula oleracea L.	Root and plant feeding fly	Grasses and ornamentals	United States	WSDA Survey	Hortsense, PNW Nursery IPM, Garden Friends & Foes, WSU Info
1998
Straw-colored tortrix Clepsis spectrana (Treitschke)	Leaf and fruit feeding moth	Fruit trees and many crops	United States		IPM Images, ID Images
1997
European rose bud borer Notocelia cynosbatella (L.)	Shoot boring moth	Roses	United States
European oak skeletonizer Carcina quercana (Fabricius)	Defoliating moth	Ornamental plants	United States
Carnation tortrix Cacoecimorpha pronubana (HÃƒbner)	Leaf and fruit feeding moth	Fruit, ornamentals, many crops	Washington State
1996
Exotic click beetle Melanotus cete Candeze	Seed and root feeding beetle	Row crops and ornamentals	North America
Exotic bark beetle Xyleborinus alni (Niisima)	Bark boring beetle	Timber and ornamental trees	North America
Bark beetle Xyloterinus politus (Say)	Bark boring beetle	Timber and ornamental trees	Western U.S.
1995
Green budworm Hedya nubiferana (Haworth)	Leaf and fruit feeding moth	Fruit and ornamental trees	Western U.S.
European emerald Hemithea aestivaria (HÃƒbner)	Leaf feeding moth	Fruit and ornamental trees	United States
Apple tortrix Archips fuscocupreanus Walsm.	Leaf and fruit feeding moth	Fruit and ornamental trees	North America		ID Images
1994
Apple leafcurling midge Dasineura mali (Kieffer)	Leaf feeding gall fly	Apples (fruit and ornamental)	Western U.S.		WSU PLS-18
Lesser budmoth Recurvaria nanella (HÃƒbner)	Leaf feeding moth	Fruit and ornamental trees	Western U.S.
Green pug moth Chloroclystis rectangulata (L.)	Leaf feeding moth	Fruit and ornamental trees	Western U.S.
'Golden' leaf roller Acleris holmiana (L.)	Leaf feeding moth	Fruit and ornamental trees	United States
Dark fruit tree tortrix Pandemis heparana (D & Schif)	Leaf and fruit feeding moth	Fruit and ornamental trees	United States
Barred fruit tree tortrix Pandemis cerasana (Hubner)	Leaf and fruit feeding moth	Fruit and ornamental trees	United States		ID Images
Apple skeletonizer Swammerdamia pellicaria (Retz.)	Leaf feeding moth	Apples (fruit and ornamental)	United States		EB 1384E, Hortsense
1993
Cherry ermine moth Yponomeuta padellus L.	Leaf feeding moth	Cherry (fruit and ornamental)	United States	In Prep	Garden Friends & Foes, PNW Nursery IPM
1991
European rose shoot borer Notocelia rosacolana Doubleday	Shoot boring moth	Roses	Western U.S.
Cherry bark tortrix Enarmonia formosana Scopoli	Bark boring moth	Cherry (fruit and ornamental)	United States		WSU PLS-67, Hortsense, Garden Friends & Foes, ID Images
1990
Pear leaf midge Dasineura pyri (Bouche)	Leaf feeding gall fly	Pears (fruit and ornamental)	Western U.S.		PNW Nursery, IPM, OPM Online
1988
Grape phylloxera Daktulosphaira vitifoliae (Fitch)	Grape root feeding aphid	Grapes	Washington State		EB 1566
1985
Apple ermine moth Yponomeuta malinellus Zeller	Leaf feeding moth	Apples (fruit and ornamental)	United States		EB 1526, Hortsense, OPM Online, ID Images
Exotic Nuisance Pests Established in Washington State Since 1985
2004
Metapoplax seed bug Metapoplax ditomoides (Costa)	Seed feeding bug (nuisance pest)	-	Washington State
2002
Raglius seed bug Raglius alboacuminatus (Goeze)	Seed feeding bug (nuisance pest)	-	Washington State
2000
Rhyparochromis seed bug Rhyparochromis vulgaris (Schilling)	Seed feeding bug (nuisance pest)	-	North America	WSDA Alert	Garden Friends & Foes
1999
European paper wasp Polistes dominulus (Christ)	Wasp (nuisance and hazard)	-	Western U.S.		EB 0643, WSU PLS-13, Master Gardener Magazine, Garden Friends & Foes
Exotic Plant Pests Introduced and Eradicated in Washington State Since 1985
Gypsy moth (European) Lymantria dispar L.	Defoliating moth	Fruit, ornamentals, many crops		WSDA Online
Gypsy moth (Asian) Lymantria dispar L.	Defoliating moth	Fruit, ornamentals, many crops		WSDA Online
Japanese beetle Popilia japonica Newman	Leaf and fruit feeding beetle	Fruit, ornamentals, many crops		In Prep
Citrus longhorned beetle Anoplophra chinensis (Forster)	Tree boring beetle	Ornamental, fruit, forest trees			WSU PLS-41, WSU Info, Garden Friends & Foes
Exotic Plant Pests Newly Established in the Region (B.C. and Oregon) Threatening Washington State
2004
Brown marmorated stink bug Halyomorpha halys (StÃƒhl)	Leaf feeding bug	Row crops, fruit, ornamentals	Western U.S. (Oregon)		PNW Nursery IPM
European Chafer Rhizotrogus majalis				WSDA Survey
Other Surveys for Exotic Plant Pests Not Found in Washington State
Plum Fruit Moth -2002 Grapholita funebrana				WSDA Survey
Leek Moth -2002 Acrolepiopsis assectella				WSDA Survey
Chilean Fruit Tree Leafrollers Proeulia spp.				WSDA Survey
European Corn Borer Ostrinia nubilalis				WSDA Report
Information provided by: Eric LaGasa, Chief Entomologist, Pest Program / Plant Protection Division, Washington State Department of Agriculture, P.O. Box 42560, Olympia, Washington 98504-2560, (360) 902-2063 PestProgram@agr.wa.gov

Exotic Pest Survey List of Exotic Species of Concern: Introduced, Established and Threatening Washington State

Exotic Plant Pests New to Washington State Since 1985 (Listed by year of first detection) Compilation Date: 13 October 2008

Exotic Nuisance Pests Established in Washington State Since 1985

Exotic Plant Pests Introduced and Eradicated in Washington State Since 1985

Exotic Plant Pests Newly Established in the Region (B.C. and Oregon) Threatening Washington State

Other Surveys for Exotic Plant Pests Not Found in Washington State

Exotic Pest Survey
List of Exotic Species of Concern:
Introduced, Established and Threatening Washington State

Exotic Plant Pests New to Washington State Since 1985 (Listed by year of first detection)
Compilation Date: 13 October 2008