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August Thorn
Ennomos quercinaria (Hufnagel, 1767)
Geometridae: Ennominae
1912 / 70.233
Photo © Peter Kitchener,  Little Melton. Aug. 2008

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Similar Species
Large Thorn
Ennomos autumnaria
Canary-shouldered Thorn
Ennomos alniaria
Forewing: 18-22mm.
Flight: One generation Aug-Sept.
Foodplant:   Pedunculate Oak and Sessile Oak.
Red List: Least Concern (LC)
GB Status: Common
Former Status: Local
Verification Grade:  Adult: 1
Status
One of several similar 'Thorns'.
Woodland, parkland, hedgerows, scrub and gardens

Very similar to September Thorn, both species fly in August. August Thorn has white "socks" on each leg, and a flat resting posture, which help separate it from the similar September Thorn. (September Thorn rests with wings raised)

Recorded in 57 (77%) of 74 10k Squares.
First Recorded in 1873.
Last Recorded in 2024.
Additional Stats
Latest 10 Records
Date#VC10kArea
05/09/2024127TG04Cley next the Sea
02/09/2024127TG14Felbrigg / Runton
01/09/2024428TF83North Creake
31/08/2024127TG21Norwich (Catton)
30/08/2024127TG33Ridlington
27/08/2024128TF83North Creake
27/08/2024128TL78Weeting Heath (Gravelpit Wood)
27/08/2024227TG10Cringleford (UEA)
25/08/2024127TG04Cley next the Sea
23/08/2024128TF83North Creake
Further info: Ennomos quercinaria
 
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