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My experience with subalpina is: anterior spiracle can be pale brownish to beige, but not orange. lower calypter can be infuscated, especially in the middle and especially in pictures, but never wholly dark as in vicina and vomitoria. central light hairs of the occupit is more golden.

All coulours seem a litte strange in your photos. Basicosta and spiracle seems light/orange. Lower calypter could maybe prove to be light with a dark midline under the microscope.

Good luck ;)