doesn't look like Ostrinia penitalis, although that's probably the closest other possibility. The darker and more prominent "wavy line" between the "darkened smudge area" of the forewing and the fringe area, does not match that of Ostrinia penitalis (I don't have my notes with me as to the proper terminology). The notes on BugGuide for O. penitalis seem to describe it as a "PM line that includes a large projecting "tooth" near the inner margin". My moth doesn't have that pointy "tooth".

That dark line on my moth does line up well with Ostrinia obumbratalis. MPG maps concur with range too.

In your opinion, what doesn't match between my image and the linked thumbnail posting on BugGuide that I included? I guess it was deleted for some reason, but here it is again. I see numerous matches and no mismatches.

Jross, I did not say it could not be O. obumbratalis, but linked an Ostrinia specimen veted by BOLD. I am surely not one to make this call, but since you asked, I see a difference in that yours has both a strong PM AND a strong ST line much like this other one of mine which I have not identified and which was located closer to the one you photographed. I admit that the PM line on mine is "fuzzier" near the inner margin.

I would love to have a reference to your notes. These are very confusing to me even though I have tried to study the ones I see.