So, in conclusion, this was a phenomenal week of butterflying, and even though I saw 94 species, I still missed out on half a dozen or so that others saw. I'm not sure of the group total because one or two are still being identified, particularly Spanish Zephyr Blue, which one of the party photographed but nobody else saw.
In brief, in late summer, this is an area that looks largely unsuitable for butterflies. However, if you can find the right spots (usually those with water running nearby) you can generate monumental returns.
It's almost as if butterflies are forced into a tiny number of river valleys meaning that concentrations in these areas are quite phenomenal.
Here are a few images of multiple species sharing these same prime spots:
Two Rock Graylings alighted on something unpleasant in the company of two False Graylings and a couple of Spanish Chalkhill Blues:
This site was pure carnage; a standing pool of water with approaching 500 butterflies buzzing around. Cinquefoil Skippers are obvious here, but there are quite a few other desirable species too:
This one stands out because there are just six butterflies, with five of them being different species: Oberthur's Anomalous Blue, Turquoise Blue, Mother of Pearl Blue, Spanish Chalkhill Blue and Damon Blue (in the middle):
) and Southern White Admiral. 
And those butterfly group shots and vid. 
