My daughter photographed this day flying moth. It has beautiful yellow markings.
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A lovely moth, but the forewing markings are quite variable in both P. aurata and P. purpuralis, and to be sure of the species you really need to have the wings wide open so that you can see the markings on the hind wing. A friend, David Wilton, has done an excellent photograhic guide to these two speies, will ask him if it's okay to upload it.
P.S. in gardens Pyrausta aurata is more likely than P. purpuralis, but you can never rely on the moths following these sort of 'rules'!
Entomologist and biological recorder
Lat/Lng: 53.212409804019, -0.12599408626556
OS grid ref: TF252700