General comments:
Widespread resident.

Foster (1941) adds this species to the Hertfordshire list from Ware in 1933; the reason for the lack of earlier records is unclear. Today the moth is very common, though often hard to separate from
Brindled Pug. It should be noted that despite its colloquial name the larvae do not, apparently, feed on oak.

Recorded in 34 (83%) of 41 10k Squares.
First Recorded in 1918.
Last Recorded in 2024.