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WSU researchers warn of in-bound invasive beetle species

OLYMPIA — The Washington State Department of Agriculture (WSDA) recently issued a warning to residents as the invasive Japanese beetle (Popillia japonica) has been discovered in the state.

These destructive pests pose a threat to more than 300 plants, including roses, grapes, and hops, affecting both ornamental and agricultural industries.

Washington State University entomologist David Crowder warns of the beetles becoming a regular pest if action is not taken now,

“These coordinated, intense efforts early in the invasion are really critical because if we wait too long, it just becomes an ende...


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