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Wasp - Poecilopompilus interruptus

Wasp - Poecilopompilus interruptus
Auburn, Lee County, Alabama, USA
July 15, 2005
I would guess this specimen is either a braconid or ichneumonid. Other thoughts?

Poecilopompilus algidus
This, I am almost certain (if I quantified it probably 95%), is Poecilopompilus algidus. It is VERY close to the museum specimens I have seen. This shot is great because it gives a frontal view of the head. The interocular distance is much too wide to be a Tachypompilus and I don't believe neartic Tachypompilus are marked with yellow (notice antennae and inner margin of eyes). The abdomen is unbanded but the head is ferruginous and yellow and the eyes are strongly convergent above, separating it (albeit roughly) from any subspecies of P. interruptus. I didn't give the original ID, so I'll let Eric look it over and make that call either way...I want to see if he agrees.

I have been going through moving images to tribes and genera if possible. I got to this image and noticed I was wrong. I looked at the third antennal segment and found that it would easily fit into the upper interocular distance, meaning the eyes are not as strongly convergent above as in P. algidus. Therefore, this is P. interruptus not P. algidus. A look at the tarsal comb might make the ID better, but I think this character is good enough. I noted in the first post that the color more closely matched P. algidus but the color of P. interruptus is too variable to use color as even a supporting character in this case. That comment should be ignored and I should have ID'd this bug correctly the first time. I have seen P. algidus that match this specimen, but I have also seen many P. interruptus variations that match this individual as well.

name meaning
Lovely picture. Do you have any idea about the meaning of the genus name or a etymology source for some of these very strange wasp names? Even where the word source can be found, such as Bembix deriving from the Greek for "navel", it's difficult to figure out what exactly is being referred to

Spider Wasp.
Really nice shot of a spider wasp, probably Tachypompilus ferruginea, but would have to see additional shots to know for certain. Tachypompilus females can be very large.

As always, thanks Eric. I sa
As always, thanks Eric. I saw another specimen that was at least 1.5 inches in length, no doubt the female you referred to.

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