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

Calendar
Upcoming Events

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.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington

TaxonomyBrowseInfoImagesLinksBooksData
Photo#177152
Wasp ID - Orussus terminalis

Wasp ID - Orussus terminalis
Norfolk, Virginia, USA
April 12, 2008
Size: ~13mm
Walking along fallen tree as if searching for something.

Images of this individual: tag all
Wasp ID - Orussus terminalis Wasp ID - Orussus terminalis Wasp ID - Orussus terminalis

Searching
"Walking along fallen tree as if searching for something."

Indeed. The females scuttle along tapping the surface with their antennae. They apparently sense the resulting vibrations with their foreleg joints. They're thought to lay eggs in or near Buprestid larvae.
In my location, I've only seen them on logs with particular sized holes, characteristic of Buprestids.

You can tell this is a female by the swollen antenna tip.

Reference: Lars Vilhelmsen, Natural History Museum of Denmark, University of Copenhagen

Moved
Moved from Orussus.

NICE!!!!
This is a parasitic wood wasp (family Orussidae). From the other Orussid pic, it must be Orussus terminalis. You can tell the family by the low attachment of the antennae and the spikes/nodules on the frons. Not terribly common and really interesting phylogenetically. Nice find!

 
How common
I have to say, that in my yard, which is is N Va, they are all over the place. They cluster together at night on branches. They appear to be eating my leaves of my Sweet Bay Magnolia. They hover over the grass during daylight hrs. Thanks.

 
Thanks!
It wasn't too hard to get pics of this wasp. Didn't seem bothered by my presence at all.

 
Outstanding.
Outstanding images, Preston, and indeed a rarely-seen insect. I've only collected a couple myself, and they seemed to rapidly pace short distances rather than fly and alight....

 
Thanks Eric!
I found another similar wasp, a little smaller and faster moving on this same tree. I got two shots of it before it flew away, but they are just out of focus.....barely. I will be back there in a few days to see if I can find it again. Maybe I'll post it later, but it is not up to my standards :^).

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