Diagnostic white longitudinal streak with an angled offshoot, and dark blotch near the apex of the forewing.
C. Barrett [VCH 1901] "- hamellus, Thunb. Croxton, Little Saxton ;frequent on heaths near Lynn"
Recorded in 22 (30%) of 74 10k Squares.
First Recorded in 1884.
Last Recorded in 2020.