I came across this small, slim moth back in late spring, while I was photographing bugs in the long grass. It looked a bit different from the grass moths I had been seeing in that area. I only managed one photo before it flew off and didn't get round to trying to identify until six months later. When I did, I found it to be a diamond-back moth, Plutella xylostella (Lepidoptera: Ypononmeutidae).
Photo taken in Whiteknights Park, Reading University grounds, Reading, UK, on 2009-05-23.