We really must buy some more reference books! There are so many different species of moths, butterflies and insects around at the moment and the books we have just don't have everything listed.
This beautiful moth measured about 4-5 cm across. At least they are quite easy to photograph, unlike most of the butterflies which just never stay still long enough. I've been experimenting with my camera (have always been a point-and-shoot photographer!) and ALMOST managed to get this Ulysses with it's wings open!