Megerle in Dejean, 1821
Numerous, see text
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 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. Some species are known to transport phoretic Bursaphelenchus nematodes, including B. xylophilus which causes pine wilt disease.
- Monochamus alternatus Hope, 1842 – Japanese pine sawyer beetle
- Monochamus carolinensis (Olivier, 1792) – Carolina sawyer
- Monochamus clamator (LeConte, 1852) – spotted pine sawyer
- Monochamus dubius (Gahan, 1894)
- 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
- Monochamus obtusus Casey, 1891 – obtuse sawyer
- Monochamus saltuarius Gebler, 1830 – Sakhalin pine beetle
- Monochamus sartor (Fabricius, 1787)
- Monochamus scutellatus (Say, 1824) – white-spotted sawyer or spruce sawyer
- Monochamus sutor (Linnaeus, 1758) – pine sawyer
- Monochamus titillator (Fabricius, 1775) – southern pine sawyer
- Monochamus urussovi (Fischer von Waldheim,1806) – black fir sawyer
Three pictures of two separate sawyers found in a planting of Scots pines in Kansas.
- The Free Dictionary (TFD) (2008): Genus Monochamus. Retrieved 2009-MAR-23.
- Douglas Allen,”Sawyer Beetles”, New York Forest Owner, May 1994
- Kansas State University Extension Horticulture (KSU-EH) (2005): Pine Wilt. Version of 2005-FEB-28. Retrieved 2009-MAR-23.
- Monochamus, funet.fi
- John Acorn and Ian Sheldon. Bugs of Ontario. Edmonton, AB:Lone Pine Publ., 2003.
- Spruce Sawyer, Insects of Alberta
- Media related to Monochamus at Wikimedia Commons
- Data related to Monochamus at Wikispecies
- Monochamus, BugGuide
- Ínsect vectors of the pinewood nematode
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