Mines leaves of Salix caprea and S. cinerea with larva feeding in October/November, at first feeding in the petiole/midrib and then in a blotch in the leaf with a double line of frass edging the passage from the midrib. May produce 'green islands' in fallen leaves.
Recorded in 41 (29%) of 140 10k Squares. First Recorded in 1869. Last Recorded in 2019. (Data up to end 2019) Additional Stats