Identity parade!

[Reverdin]

These were all taken at Stelvio Pass where warrenensis is said to fly at this time of year. I believe the majority of these are cacaliae but I do think there is at least one warrenensis among them. I have no underside shots as it was a very hot day, and they weren't at all obliging. They were all smaller than any cacaliae I have seen before, some were tiny.
Anyway, if anyone with experience of Warren's feels able to cast an opinion, here they are with altitude attached...

1 - 2320m

2 - 2370m

3 - 2450m

4 - 2500m

5 - 2650m

6 - 2650m

7 - 2700m

[Reverdin]

Checking against Matt Rowling's page on warrenensis, I believe now all except one of the above are that species. I think No 4 is cacaliae. Please put me right if anyone can though

[Reverdin]

Ok, now having seen Guy's observations in his own diary, I now think I have ONE picture here of Warren's. I would be very grateful for anyone interjecting on this soliloquy, although I think this must be the most difficult of differentiations without being in the field to see them, so understand the silence

[Padfield]

Yes - it is very difficult without being there! I promise I will publish my thoughts, but events keep intervening ...

Guy

[daveboyle]

Not claiming to have any knowledge of these species at all but I would have thought your first photo is the only one that maybe shows something different due to the reduced chequered fringes to both wings