Morley’s Final Catalogue: Rarely noted with us since taken at Leiston before 1890 (Grey). A local species feeding on alder, among which it is common at Catfield and Caister, just over the Norfolk border. Bentley Woods in 1934 (Whit), in May 1933 and at light by Fritton Lake in August 1934 (D) and June 1935 (Mly); Blythbro and Wangford woods (Cd).
Recent Status: A locally common woodland species in Suffolk.
Life Style: A double brooded species flying in April to June and again in July to September. The larvae feed on buds, catkins or rolled leaves of Betula and Alnus. The second generation hibernates. They pupate in a cocoon on the ground.
Identification: The species is variable in the extent of paler markings on a brown to black forewing. The oblique basal edge of the central dorsal blotch is usually the most consistent marking. More Info
Recorded in 33 (57%) of 58 10k Squares. First Recorded in 1933. Last Recorded in 2020. Additional Stats