I caught a Beautiful Golden Y in my trap the other day
A very attractively marked moth
It is a resident and common moth – its caterpillars feed on a variety of herbaceous plants including nettles, ragwort and honeysuckle.
As this picture shows it is closely related to the Silver Y which is an immigrant moth which in some summers can arrive in Britain from the Continent in huge numbers
A Dartmoor blog 
Thanks! I just took a photo of one in South Brent and was about to look it up when your blog email arrived and saved me the trouble.
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