Yorkshire Status: Abundant and widespread resident.
Sutton & Beaumont, 1989: Widely distributed and often common in all five vice-counties. Two distinct forms of the larva are found in the North of England, the usual brown form, and a smooth green variety. This latter has been reported as feeding on rowan elsewhere, but in Yorkshire has also been found on hawthorn (MRB).
2012 (CHF): Remains widespread and common across the county.
Recorded in 183 (92%) of 200 10k Squares. First Recorded in 1846. Last Recorded in 2022. Additional Stats