Posted by Nikita Vikhrev on 19-12-2020 23:42
#4
Yes, for Central Europe it is alpine species. (In N Russia - very common everywhere.)
For identification see my key here:
https://ia800502.us.archive.org/26/items/RevisionOfTheKeyCharactersForTheThricopsNigrifronsSpecies-group/788-G-3-layout.pdf