Pyrgus serratulae - Olive Skipper

Pyrgus-serratulae---olive-skipper | PTKbutterflies
Pyrgus-serratulae---olive-skipper | PTKbutterflies

This species has a rather more brown upperside than other Pyrgus I have seen. The brassy dusting emphasizes this. The hindwing underside olive grey ground colour, with the oval spot at the costal side of the basal area is distinctive.

I have now met up with this butterfly several times high in the Alps, but these are the best images I have so far.