This moth has quite an unpronounceable scientific name (Ypsolopha sequella) so thank goodness its common name is so good. Pied meaning black and white, smudge is a bit insulting, as the pattern is quite interesting - the large black patch on its shoulders resembling a rabbit's head! (it is sometimes called a bunny moth). It is quite tiny, with a wingspan under 2cm and found in Woodland areas (which is where I spotted this one). It normally flies at night, so I was very lucky to see it during the day.