Lang's Short-tailed Blue (Leptotes pirithous) on the left and Long-tailed Blue (Lampides boeticus) on the right
Searching the outskirts on foot near our holiday rental in Marseillan, South of France didn't reveal much in the way of diverse wildlife. There were plenty of Black Redstarts in the graveyard and the odd huge raptor overhead. The one scrubby field I found did on closer inspection have lots of blue butterflies particularly around the edges. Many turned out to be nothing more exotic than Common Blue and Brown Argus though I was pleased to identify Lang's short-tailed Blue as well. It was only on returning home and uploading my pics that I discovered I also had photos of Long-tailed Blue, which was nice! They do look superficially similar. Plenty of Mallow Skipper on the wing too.
Long-tailed Blue above
Lang's short-tailed Blue below
Lang's short-tailed Blue, wings open