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Canary-shouldered Thorn
Ennomos alniaria (Linnaeus, 1758)
Geometridae: Ennominae
1913 / 70.234
Photo © Dave Appleton,  17/08/2014 - North Elmham

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Similar Norfolk Species
August Thorn
Ennomos quercinaria
Dusky Thorn
Ennomos fuscantaria
Forewing: 16-20mm.
Flight: One generation July-Oct.
Foodplant:   Downy and Silver Birch, Alder, limes, elms.
Nat Status: Common
Verification Grade:  Adult: 1
Norfolk Status
Named after the canary-yellow thorax.

Recorded in 67 (91%) of 74 10k Squares.
First Recorded in 1873.
Last Recorded in 2021.

Latest 5 Records
Date#VC10k Area
30/09/20211427TG33 - Bacton
28/09/2021127TM18 - Diss
25/09/2021228TF62 - King's Lynn/Dersingham
25/09/2021128TF92 - Fakenham/Ryburgh
25/09/2021327TG13 - Baconsthorpe
Further info: Ennomos alniaria
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