Norfolk status Scarce. One of three rather similar British species. Much larger pure-white markings on leading edge of forewing than other two similar 'pinions'. Elm feeder, suffered greatly by outbreaks of Duch Elm Disease in the 1970's onwards.
Look for larvae in epicormic growth (shoots growing directly from trunk)
Record confirmation required.
Last recorded in Norfolk in 1986.
BAP Priority Species
Recorded in 14 (20%) of 69 10k Squares. First Recorded in 1800. Last Recorded in 1986.