All in the murderous family: Asian giant hornets found in Washington in 2021 came from 2020 nest

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A queen Asian giant hornet is shown nesting inside a tree in Whatcom County, Wash. (WSDA photo)

The Washington State Department of Agriculture attracted worldwide attention when it successfully eradicated an Asian giant hornet nest in the northwestern part of the state in the fall of 2020. But the so-called Murder Hornets returned in 2021, and three more nests had to be unearthed. and destroyed.

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Now the agency has determined that the 2021 insects blew up the 2020 nest before being destroyed.

The WSDA said in a tweet on Wednesday that all three nests found last summer were started by queens who abandoned nests found near Blaine, Wash., in October 2020. The nest was not started by the queen who started the 2020 nest, the WSDA said in another. Tweet.


The Asian giant hornet is an invasive species that is not native to the Americas. They are the largest species of hornet in the world and were first sighted in the US in December 2019 in Washington state. Hornets are known to attack and destroy beehives and can kill an entire hive in a matter of hours.

The WSDA uses small tracking technology to tag and follow hornets back to nests, which have then been cut from various types of tree trunks.

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  • Second Murder Hornet Nest Erupted and Third Nest Located in Washington State
  • Washington state tracks down another Asian giant hornet nest, plans to eradicate it soon
  • The fight against ‘murder hornets’: Kevlar thread to tie on trackers, thick foam suits to protect against stings
  • ‘Murder Hornet’ nests cut from trees in Washington State; 1,500 developing insects found inside

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