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Hi,

from what I gathered in the Web, the number of "postalar bristles" seems to be a criterium to distinguish D. finlandica (1 pt bristle) from D. obliterata (2 pt bristles).
I tried to extract a few views from that region from my images, but, since I don't have any experience, I can't make a clear diagnosis from these rather grainy and blurry images (sorry for that).
Is it possible to make the distinction here?

Greetings, Uli

PS: In the posterior view I have marked the region, where I think these postalar bristles could be located. I count two there :)