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September Thorn
Ennomos erosaria ([Denis & Schifferm?ller], 1775)
Geometridae: Ennominae
1915 / 70.236
Photo © Dave Wilton,  Westcott 2017

Similar Upper Thames Species
August Thorn
Ennomos quercinaria
Canary-shouldered Thorn
Ennomos alniaria
Foodplant:   Oaks, birches, limes, Beech
Red List: Near Threatened (NT)
GB Status: Common
Verification Grade:  Adult: 2

Widespread and common across the region, mainly in woodland.

Recorded in 63 (81%) of 78 10k Squares.
First Recorded in 1750.
Last Recorded in 2022.
(Data up to end 2022)

Latest 5 Records (Data up to end 2022)
Date#VC10k Area
24/09/2022124SU98 - Slough (N), Burnham Beeches
23/09/2022122SU76 - Shinfield / Finchampstead
22/09/2022122SU87 - White Waltham
20/09/2022224SU98 - Slough (N), Burnham Beeches
19/09/2022122SU67 - Reading (W), Whitchurch
Further info: Ennomos erosaria
UK Moths
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