I was fortunate to find this Brown Argus (Aricia agestis) a few days ago as they are at the very end of their flying time now. 
I think from the shape of the body that this one was a female. 
Males and females of this species are very hard to differentiate.
The average wingspan of the Brown Argus (Both sexes) is 29mm.
.jpg)
.jpg)
 








.jpg)
.jpg)












































