I very much doubt that when you saw the title of this post you thought that I was referring to a moth but that is exactly what you have got.
The Small Dusty Wave is a small European moth, varieties of this moth are found across Europe from Moscow in the east to Spain and the Mediterranean, even as far south as Morocco and Tunisia (so it is not limited to Europe). They are quite common in England and Wales, they are found in the east of Scotland only and they are rare in Ireland.
Small and dusty is a good description, this specimen has a wingspan of just 17mm typically they are between 19 -21mm and it would be easy to miss it laying flat against the wall of my house.
It was easy enough to get the shot from above but getting the face on shots was quite tricky simply because it was pressed so flat against the wall it was hard to get a good angle. You can see that I used a very narrow field of view thanks to my Canon 100mm Macro lens.