Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Interested in a 2022 BugGuide gathering in New Mexico?

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

National Moth Week 2020 photos of insects and people.

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Previous events

Wood Wasp - Orussus occidentalis - male

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

Moved from Orussus.

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.

presumably O. occidentalis or O. thoracicus based on distribution

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.

O. occidentalis
based on tibial coloration, abdominal coloration, and size - after Middlekauff, 1983.

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.

Not an ID
but I wonder about Parasitic Wood Wasps (Orussidae)

Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.