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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Ants, Bees, Wasps and Sawflies (Hymenoptera) » "Parasitica" - Parasitoid Wasps » Aulacid, Ensign, and Gasteruptiid Wasps (Evanioidea) » Aulacid Wasps (Aulacidae) » Pristaulacus
Photo#1561855
Ichneumon - Pristaulacus - male
Copyright © 2018 Nick Wiser

Ichneumon - Pristaulacus - Male
Eugene, Lane County, Oregon, USA
July 21, 2018
I think the dark mark on the wing may be useful in identification. I found this with a bunch of other kinds of wasps that were all over a spartan juniper tree as the sun was going down.

I also found another one that was identical, except there was more black on the abdomen, with the orange being much harder to see (instead of 1/2 orange and 1/2 black, it was 1/6 orange and 5/6 black).

Images of this individual: tag all
Ichneumon - Pristaulacus - male Ichneumon - Pristaulacus - male
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Contributed by Nick Wiser on 22 July, 2018 - 4:14pm
Last updated 22 July, 2018 - 11:41pm

Moved
Moved from Ichneumon Wasps.
… Ken Wolgemuth, 22 July, 2018 - 7:51pm login or register to post comments

Pristaulacus (male)…
Females are parasites of the larvae of wood boring beetles and xiphydriid wood wasps.

See reference here.
… Ross Hill, 22 July, 2018 - 4:25pm login or register to post comments

 
Not Ichneumon
Wow! And I was so sure, too.

Something to note, I did find a dead (adult) Western Cedar Borer underneath where I found this wasp. Does the presence of the wasp usually guarantee the presence of the beetles?
… Nick Wiser, 22 July, 2018 - 11:41pm login or register to post comments

 
Depends…
Females are able to detect the odors of their prey or host with their antennae - they are typically "in the area" where their hosts can be found since the adults emerged from their larvae to begin with. Males are usually out seeking females to mate with and can sometimes be found nearby. So, to answer your question, the presence of a female (or a male) might suggest, not guarantee, the presence of one of their hosts.
… Ross Hill, 23 July, 2018 - 12:35am login or register to post comments

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