The wing margins aren't chequered with black, nor is there the additional cell spot lower down the underside forewing near the base.
I keep looking at my guides, and the only others listed as being present in this region that correspond roughly in size and colouration are Amanda's, Chapman's and Turquoise.
Can anyone with more experience of Blues provide some guidance?
![Image](http://i236.photobucket.com/albums/ff241/si_mac67/Butterflies/Causse%20Mejean/UnknownBlue.jpg)