Pictures from NW Lapland
PS. now it's been announced that the Arctid I was too tired to seek for long has been found in Finland last summer. Congrats to the finder. The location hasn't been published.
PPS. now that I've heard more of the Arctid I'm pretty certain I was within half a mile from a suitable location and that we passed by the finnish location by some 10 miles. I can see it here though: http://www2.nrm.se/en/svenska_fjarilar/h/holoarctia_puengeleri.html