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Sorry Joe, hadn't refreshed my page so didn't see your identification before I added mine!
Entomologist and biological recorder
I confess I hadn't spotted the Californian location - must remember to always click on that button...
I'll bow to superior knowledge on the absence of sclerites on the forewing - it's a related genus I'd not come across. Not being familiar with hymenopteran terminology, what exactly are the forewing sclerites, Gav? ;o)
The sclerites are these patches of cuticle (sclerotized) in the discosubmarginal cell (the big horse-head cell of the fore wing). Enicospilus species usually have from one to several of these sclerites but they are absent in some species. Look up a picture of Enicospilus ramidulus and you will see some nice sclerites. A few other nocturnal ichneumonids and braconids also have sclerites.
I see 'em - that's really useful, thank you.
Lat/Lng: 37.791, -121.9765