New to North America, 22 specimens of Xyleborus seriatus were found in traps in a Massachusetts forest.  The beetle is about three millimeters long, brown in color, and typically feeds on fungi in dead or dying trees.  The beetles may have been transported on wooden crates from Asia.

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http://www.washingtonpost.com/wp-dyn/content/article/2005/08/01/AR2005080100883.html