Morley's Final Catalogue: Scarce, but widespread. Sudbury (Ransom), Freston, Ipswich, Brandeston, Swefling, Aldeburgh, Lowestoft in August (Ent. 1922, 258), Fritton, Beccles, Flixton, Bungay at light; Needham, West Stow; Tuddenham Fen in August 1928 (Mly), Brandon.
Recent Suffolk Status: Formerly a local species but now quite rare in the county with very few recent records. Photos may be requested to confirm records.
Life history: Single-brooded.
Identification: August thorn rests with wings held flatter. Canary-shouldered thorn normally has the bright yellow thorax, but beware specimens with a buff thorax which can resemble September thorn. The outer cross line is straighter in September thorn.
Habitat: Woodland, parkland, gardens.
Retained Specimen / Photograph will be Required.
Recorded in 34 (59%) of 58 10k Squares. First Recorded in 1922. Last Recorded in 2024. Additional Stats
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