What Skipper is this?

[Crispin]

Photographed by my sister on 5 Sept 2010 in below Passo di Finestra, about 1250m, Bellunesi National Park, Dolomites, NE Italy.

When I first saw the image on her camera I thought it looked like an aberration of Silver-spotted Skipper, but I am not so sure.
Any thoughts?

Crispin

[Padfield]

I'd go for Pyrgus alveus - large grizzled skipper. On that view alone a few other Pyrgus species are difficult to rule out definitively, but there are features visible which count against most of them (carlinae - band too complete, armoricanus - anal arches very ill-defined and ground colour wrong). The altitude rules out warrenensis, which looks like a miniature alveus.

Guy