Geometridae : Ennominae
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Photo © Paul Bryant,  Woolpit, Suffolk

Similar Suffolk Species
September Thorn
Ennomos erosaria
Canary-shouldered Thorn
Ennomos alniaria
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August Thorn
Ennomos quercinaria

(Hufnagel, 1767) 1912 / 70.233

Recent Suffolk Status: Local.

Life history: Although widely distributed across the county, this species is never common but is recorded annually. It has a single generation, flying between July and September.

Identification: It is one of a few similar 'Thorns' but can be distinguished by the shape of the cross-lines on the forewings; the inner line is distinctly curved whilst the outer line is kinked where is meets the leading edge.

Habitats: The moth inhabits woodland, parks and gardens where the larvae feed on trees such as Oak and Beech.

Recorded in 34 (59%) of 58 10k Squares.
First Recorded in 1893.
Last Recorded in 2023.
Additional Stats

< Large Thorn  |  Canary-shouldered Thorn >

List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10k Area
28/08/2023125TM47 - Blythburgh/Dunwich
24/08/2023125TM25 - Wickham Market/Otley
18/08/2023125TM25 - Wickham Market/Otley
15/08/2023126TL78 - Brandon/Lakenheath
15/08/2023225TM27 - Fressingfield/Stradbroke
Show Details | 1990 to 2022 | 2000 to 2022 | Graph Key
Express Record August Thorn
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Copyright © Jim Wheeler 2023

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Forewing: 18-22mm.
Flight: One generation Aug-Sept.
Foodplant:   Pedunculate Oak and Sessile Oak
Red List: Least Concern (LC)
GB Status: Common
BAP Status: Declining (Research only)
Former Status: Local
Verification Grade:  Adult: 1
 Immature Adult
Underlying maps using Digital Map Data © Norfolk Online Lepidoptera Archive - NOLA™ - Suffolk 2023. © James Wheeler - Norfolk Moths 2007 - 2023. Data © NOLA™ - Suffolk 2023
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