Dear Istvan,
It's not Pyrgus malvae. It looks like a very dark variation of Pyrgus alveus or Pyrgus armoricanus. Where and when you found this Pyrgus species?
Best wishes
Klaus-Bernhard
Dear Klaus-Bernhard!
It's from Hungary. The location is the Great Hungarian plane, Kisújszállás (date: 2011.09.17.). I have found here two different Pyrgus sp. (malvae and armoricanus) but this is different.
Best regards: István