Marbled Beauty Moth Bryophila/Cryphia domestica
The Marbled Beauty, same moth (above), different background, gives impression of a different colour.
Wingspan 20-25mm; UK flight Jul-Aug.
(The Beautiful Marbled is an entirely different moth.)
(The Beautiful Marbled is an entirely different moth.)
Blue colours on white. Caterpillars eat lichens.
Younger specimen, under artificial light, greenish (here) or pinkish (elsewhere) colours emerge but soon fade.