I agree with you Gavia on Agrodiaetus escheri and the underwing pattern is virtually there as far as i can see apart from the 8th spot in the post discal area at the base of the hindwing plus as Gavia has well highlighted the posterior chequering.Just to throw something else into the mixer i was baffled by the Eschers blue i saw in Tuscany some years ago and came to the conclusion that it could only have been A.escheri splendens but the upper forewings that are(on a male at least) supposed to be paler blue?....but they were not!? does the nominate A.escheri cross over range with A.escheri splendens?because i am still unsure as to exactly what race it was.No photos unfortunately.
Dave.