The Small Copper butterfly is named after the copper-orange wings with a slight green-blue tinge from hair near the body.
It is roughly the size of the Common Blue butterfly and, like the Blue, its "Large" relative became extinct in the UK, but is being re-introduced from Continental stock.
Form caeruleopunctata, a variation with pale blue spots on hind wing
Small Copper, form caeruleopunctata in Totteridge Fields, London
The spots on top of the forewing vary-- Southern Europe
The spots on top of forewing -- UK