Butterfly - Silver Studded Blue or Idas Blue

[Tinkerbell]

Found this butterfly whilst out walking in the Poqueira Gorge, turns out its either a Silver Studded Blue or an Idas Blue!! Only one way to tell the difference and that is by a looking at its ankle with a magnifying glass, hmmmm. The Idas Blue has a limited distribution in Southern Spain but is found in the Sierra Nevada. If anyone knows the correct identification of this butterfly please let us know.