I saw several mines of Phyllocnistis saligna on Crack Willow and White Willow by the River Wye at Wyesham during a lunchtime walk. This is a really distinctive mine: large, with a silvery upper epidermis, central frass line, and extension into the petiole. This is the 4th record for VC35: following 2 by Robert Homan on the Wye at Monmouth and 1 by me on the Usk at Abergavenny. I'm not aware of records further west, though I assume it's in Glamorgan. It's definitely one to look for in SE Carms.