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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Ants, Bees, Wasps and Sawflies (Hymenoptera) » "Symphyta" - Sawflies, Horntails, and Wood Wasps » Parasitic Wood Wasps (Orussidae) » Orussus » Orussus occidentalis
Photo#182132
Wood Wasp - Orussus occidentalis - male
Copyright © 2008 Stephen Hart

Wood Wasp - Orussus occidentalis - Male
Sequim, Port Williams, Clallam County, Washington, USA
May 10, 2008
Size: 10mm approximately
This small hymenopteran was scuttling around on a beach log. Though I could guide it back and forth with my finger, it never held still long enough for a photo on the log. But it held still on my finger. I never saw it fly; it finally just fell off the log and I lost sight of it.
More Orussus on bugguide



More photos, and video, on Olympic Natural History page.

Images of this individual: tag all
Wood Wasp - Orussus occidentalis - male Small Sawfly? - Orussus occidentalis - male Wood Wasp - Orussus occidentalis - male
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Contributed by Stephen Hart on 12 May, 2008 - 10:50am
Last updated 3 April, 2014 - 3:02pm

Moved
Moved from Orussus.
… Stephen Hart, 3 April, 2014 - 3:02pm login or register to post comments

More info on this specimen
Lars Vilhelmsen, Natural History Museum of Denmark, University of Copenhagen, studies Parasitic Wood Wasps. He e-mailed me about my images of Orussus on my web site [here], noting that most of the images I show are males. I've changed the bugguide pages on 12 19 08 to reflect that new information.
… Stephen Hart, 19 December, 2008 - 7:51pm login or register to post comments

Orussus
presumably O. occidentalis or O. thoracicus based on distribution
… John S. Ascher, 12 May, 2008 - 11:13am login or register to post comments

 
Parasitic Wood Wasps (Orussidae)
Thank you.
I wish I had keyed this! It falls out at #2 in Triplehorn and Johnson, my kind of key experience.
… Stephen Hart, 12 May, 2008 - 1:41pm login or register to post comments

 
O. occidentalis
based on tibial coloration, abdominal coloration, and size - after Middlekauff, 1983.
… Arlo Pelegrin, 3 April, 2014 - 12:35pm login or register to post comments

 
O. occidentalis
Lars Vilhelmsen agrees on the species, in a personal e-mail to me.

Some of the photos I have don't show the red abdomen:



I don't remember why I didn't move these pages along with at least one other of my photos.
… Stephen Hart, 3 April, 2014 - 2:59pm login or register to post comments

Not an ID
but I wonder about Parasitic Wood Wasps (Orussidae)
… John R. Maxwell, 12 May, 2008 - 11:05am login or register to post comments

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