| 100 most dangerous invaders |
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| Micro-Organisms |
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poplar canker (Xanthomonas populi)
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| Aquatic plants |
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European water chestnut (Trapa natans)
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| Land plants |
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African Rue
| Peganum harmala**
| camelthorn
| Alhagi pseudalhagi
| cape ivy
| Senecio mikanioides**
| coltsfoot (not Petasities frigidus)
| Tussilago farfara** | giant hogweed
| Heracleum mantegazzianum**
| goatgrasses (barbed, ovate)
| Aegilops triuncialis , A. ovata
| hawkweeds (king-devil, meadow, mouse-ear, orange, yellow)
| Hieracium piloselloides , H. pratense **, H. pilosella , H. aurantiacum **, H. floribundum
| | giant reed grass | Arundo donax**
| | kudzu | Pueraria lobata**
| matgrass
| Nardus stricta**
| mile-a-minute weed
| Polygonum perfoliatum*
| Paterson's curse
| Echium plantagineum**
| Portuguese broom
| Cytisus rotundus**
| silverleaf nightshade
| Solanum elaegnifolium
| skeletonleaf bursage
| Ambrosia tomentosa
| squarrose knapweed
| Centaurea virgata**
| starthistles (Iberian, purple)
| Centaurea iberica **, C. calcitrapa **
| Syrian bean-caper
| Zygophyllum fabago
| Texas blueweed
| Helianthus ciliaris
| thistles (plumless, smooth distaff, woolly distaff)
| Carduus alanthoides **, Carthamus baeticus , Carthamus lanatus **
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| Aquatic invertebrates |
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mitten crab (Eriocheir spp.)
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| Land invertebrates |
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Japanese beetle (Popillia japonica)
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| Africanized honey bee | Apis mellifera scutellata
| Argentine ant
| Linepithema humile*
| Asian longhorned beetle
| Anoplophora glabripennis, A. chinensis
| brown spruce longhorn beetles
| Tetropium fuscumm, T. castaneum*
| emerald ash borer
| Agrilus planipennis
| European chafer
| Rhizotrogus majalis
| European corn borer
| Ostrinia nubilalis
| European woodwasp
| Sirex noctilio | granulate ambrosia beetle
| Xylosandrus crassiusculus*
| gypsy moths (European, Asian, pink, nun moth)
| Lymantria dispar*, L. mathura*, L. monacha
| imported fire ants (red, black)
| Solenopsis invicta*, S. richteri
| Japanese beetle
| Popillia japonica*
| Japanese wax scale
| Ceroplastes japonicus | | light brown apple moth | Epiphyas postvittana | khapra beetle
| Trogoderma granarium
| Mexican bean beetle
| Epilachna varivestis
| old world bollworm
| Helicoverpa armigera
| Oriental beetle
| Anomala orientalis
| plum curculio
| Conotrachelus nenuphar
| | pine shoot beetle | Tomicus piniperda
| sawyers
| Monochamus urussovi*, M. alternatus*
| Siberian moth
| Dendrolimus superans
| silver Y moth
| Autographa gamma
| spruce bark beetle
| Ips typographus
| Swede midge
| Contarinia nasturtii
| | White garden snail | Thesbe pisa |
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| Fish |
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Atlantic salmon (Salmo salar)
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| Amur goby | Rhinogobius brunneus
| Asian carp (bighead, silver)
| Hypophthalmichthys nobilis, H. molitrix
| Atlantic salmon
| Salmo salar
| black carp
| Mylopharyngodon piceus
| muckellunge, northern pike, tiger muskie
| Esox spp.*
| round goby
| Neogobius melanostomas
| ruffe
| Gymnocephalus cernuus
| Shimofuri goby
| Tridentiger bifasciatus
| snakeheads
| Channa spp.
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| Birds |
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| Mammals |
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| Details |
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* Detected previously in Oregon, but eradicated or did not establish.
** Currently under eradication or restricted to a small area in Oregon.
100 Most Dangerous Invader list 2007 (pdf format)
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