Six-spot Burnett must take pride of place with the Jersey Tiger as the UK's most striking day flying moth. When I went to Knocking Hoe on Tuesday there was only a smattering of butterflies but a veritable infestation of Six-spot on the flowers of Knapweed, Scabious and Thistle.

 One for the entomologists: some had waxy, translucent wings. Why is that? Some stage in their growth cycle?