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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Beetles (Coleoptera) » Water, Rove, Scarab, Longhorn, Leaf and Snout Beetles (Polyphaga) » Long-horned and Leaf Beetles (Chrysomeloidea) » Longhorned Beetles (Cerambycidae) » Flat-Faced Longhorns (Lamiinae) » Lamiini » Monochamus » Whitespotted Sawyer (Monochamus scutellatus)
Photo#40558
Monochamus Sawyer Beetle - Monochamus scutellatus
Copyright © 2002 Scott Nelson

Monochamus Sawyer Beetle - Monochamus scutellatus
Jacks Creek, Jefferson County, Oregon, USA
June 13, 2002
Size: 27 mm
The lack of white spots and all black antennae make me think this isn't a Pine Sawyer. Can anyone verify?
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Contributed by Scott Nelson on 8 January, 2006 - 11:55am
Last updated 8 January, 2006 - 2:19pm

Male M. scutellatus
The males have longer all-black antennae and considerably less elytral speckling. (Yours appears to have a little speckling.) Compare:
… Jim McClarin, 8 January, 2006 - 12:35pm login or register to post comments

 
Longhorn gender differences
Jim, thanks for pointing out some of these differences. When I first checked bugguide pages, I did see these images but did not know that this species was so widespread from East coast to West Coast.
… Scott Nelson, 8 January, 2006 - 12:48pm login or register to post comments

 
Here's a distribution map for species:
http://www.eppo.org/QUARANTINE/insects/Monochamus_scutellatus/MONCST_map.pdf

And here's a view of Monochamus oregonensis for comparison.
… Jim McClarin, 8 January, 2006 - 2:13pm login or register to post comments

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