Name That Moth

Early this morning this little guy found a really good crack in some wood where s/he could sleep during the day. Unfortunately the crack turned out to be the space between the gate to our yard and the door jamb, so all day the sleeper has been see-sawing to and fro as we have opened and closed the door. I don't know what kind of moth it is, only that it looks lovely. Can you identify it, Dear Reader? To narrow down the possibilities, note that this moth lives on the inner margin of the Stockholm archipelago at about N 59° 18', E 18° 15'.

Update same evening: Johan Lundgren pinpointed the moth: it's a Yellow Line Quaker, Agrochola macilenta, or as Ansa Messner adds, lädergult backfly in Swedish. They aren't very common in August, preferring to fly during the autumn.