Since I don't think you can add images to comments, I thought it would be easier to create a new post to show highlight the costal fold - a character I keep banging on about, as it can be rather useful with male tortricids. It is a sense organ on some males, and contains scent scales. So here is a close-up of Vaughn's Notocelia:
And here it is again with the fold highlighted:
On a good photo of a male Tortricid it can usually be seen.
So here is an image of E. trimaculana on UK-Moths. The fold can be seen, and reaches nearly the middle of the wing:
I can't see a fold on the two rosaecolana photos, but on roborana: http://www.ukmoths.org.uk/show.php?bf=1178
and on incarnatana:
the fold is again reaching the middle of the wing - as it should according to Bradley et al (1979).
If you keep going through UK-Moths you will see some quite striking folds:
The costal fold was the key character indicating to me that this moth:
was Epiphyas postvittana, and not Clepsis consimilana. For the discussion check the original post (here). Essentially, the fold can be seen to about 2/5ths, whilst Clepsis does not have one at all.