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European chafer (2012) Rhizotrogus majalis This pest is destructive to lawns in the larval stage and feeds on leaves and flowers in the adult stage. This beetle was first found in British Columbia in 2001. It naturally disperses at a rate of about 10 mile ...

Red lily leaf beetle (2012) Lilioceris lilii The red lily leaf beetle (RLLB) is a European and Mediterranean beetle that feeds primarily on plants in the lily family. Known hosts are true lilies (excluding daylilies) and particularly the Asiatic lilies an ...

Mountain ash sawfly (2009) Pristiphora geniculata Mountain ash sawfly is a recent addition to pests of American and European mountain ash, (Sorbus americana and S. aucuparia respectively), which are commonly planted ornamental landscape trees and naturali ...

Elm seed bug (2009) Arocatus melanocephalus The elm seed bug has limited distribution in Oregon, Washington and Idaho. It has also been found in Utah. The elm seed bug is native to south central Europe. While we do not know how it arrived, there have been ...

Seed bugs (2001- 2005) Mediterranean seed bug (Xanthochilus saturnius) Rhyparochromus vulgaris Tuxedo bug (Raglius alboacuminatus) There are several native seed bugs in the Pacific Northwest (PNW). Examples include the boxelder bug (Heteroptera: Rhopolida ...

Viburnum leaf beetle (2001) Viburnum leaf beetle (2001) Pyrrhalta viburni The first record of the viburnum leaf beetle (VLB) in North America was from Ontario in 1947, although it may have arrived in the early 1900s on nursery stock from Europe. In the U. ...

Spotted lanternfly Lycorma delicatula The spotted lanternfly is an invasive planthopper first documented in Pennsylvania in 2014 and has since spread to several other states. This insect feeds on important crops such as grapes, hops, and fruit trees as we ...

Rose stem girdler (2014) Justin O’Dea Agrilus cuprescens Pest description and crop damage Rose stem girdler (RSG) is a small copper-green-colored Buprestidae family beetle pest of caneberry crops and ornamental brambles (Rosa and Rubus spp.). This pest is ...

Ongoing Eradication Programs Michael R. Bush, Christopher Adams, and Sven Spichiger Latest revision:  March 2024 ...

Northern giant hornet Latest revision:  March 2024 Vespa mandarinia Several invasive hornets, including the Northern giant hornet (NGH), have been intercepted in ports throughout the Pacific Northwest. In 2019, NGH was confirmed in and eradicated from Bri ...