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''Monochamus'' is a genus of longhorn beetles found throughout the world. They are commonly known as sawyer beetles or sawyers, as their larvae bore into dead or dying trees, especially conifers〔The Free Dictionary (TFD) (2008): (Genus Monochamus ). Retrieved 2009-MAR-23.〕 such as pines. They are the type genus of the Monochamini, a tribe in the huge long-horned beetle subfamily Lamiinae, but typically included in the Lamiini today. If sawyer beetles infect freshly cut pine logs, they can cause a 30–40% loss in value due to the tunnels their larvae bore. It's important to process logs within a few weeks of cutting or store them in water to minimize damage.〔( Douglas Allen,”Sawyer Beetles”, New York Forest Owner, May 1994 ) 〕 Some species are known to transport phoretic ''Bursaphelenchus'' nematodes, including ''B. xylophilus'' which causes pine wilt disease.〔Kansas State University Extension Horticulture (KSU-EH) (2005): (Pine Wilt ). Version of 2005-FEB-28. Retrieved 2009-MAR-23.〕 ==Selected species== Listed alphabetically.〔(''Monochamus'' ), funet.fi〕 * ''Monochamus alternatus'' Hope, 1842 – Japanese pine sawyer beetle * ''Monochamus carolinensis'' (Olivier, 1792) – Carolina sawyer * ''Monochamus clamator'' (LeConte, 1852) – spotted pine sawyer * ''Monochamus galloprovincialis'' (Olivier,1795) – black pine sawyer or timberman beetle * ''Monochamus grandis'' Waterhouse, 1881 * ''Monochamus guttulatus'' Gressitt, 1951 * ''Monochamus impluviatus'' Motschulsky, 1859 * ''Monochamus marmorator'' Kirby in Richardson, 1837 – balsam fir sawyer * ''Monochamus maruokai'' Hayashi, 1962 * ''Monochamus mutator'' LeConte in Agassiz, 1850 – spotted pine sawyer * ''Monochamus nitens'' Bates, 1884 * ''Monochamus notatus'' (Drury, 1773) – northeastern sawyer or notable sawyer〔John Acorn and Ian Sheldon. Bugs of Ontario. Edmonton, AB:Lone Pine Publ., 2003.〕 * ''Monochamus obtusus'' Casey, 1891 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Monochamus」の詳細全文を読む スポンサード リンク
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