I've posted pictures of it on the never-failing Upper Thames Moths blog where expert Dave Wilton surmises that it's suffered from getting wet. This seems the likeliest bet for the washing away of the normally lustrous glitter and glow of the reflective and refracting scales which give the moth its distinction and name.
|juncta, with a snoozing friend|
Posting on the UTM blog was handy too in that another of experts, Peter Hall, suggested that the time is not far distant when juncta and aurae will be classified as different species rather than forms of the same one. Another 'new' UK moth to add the 3,500 or more that we have already. Hooray!