Ioannis

Thank you for the suggestion Daniele. I will look towards this direction.

Thanks Christo. It took me some reading to figure how to distinguish males from females :)

Thank you Christo!

Beautiful and touching!

Looks a lot like Emmelina monodactyla, but there are so many species of plume moths in North America, I can't say which one exactly it is. Try to look here: http://www.plumemoth.com if you can identify it.

Thanks Christo. I updated the description and added a reference to the paper first describing this butterfly in Greece.

Thank you Manval. It seems in fact that this is it. I was wrong about the family.
But most pictures of Ematheudes punctella in the net have long palps. Do you know why sometimes, including in my picture they are absent?

Thank you Yasser!

Thank you Daniele! It seems I spotted an invasive pest, first seen in Greece at 2008 and 2009. I will update description with more data.

Thank you Arlanda!