Geometridae : Ennominae
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Photo © Neil Sherman,  Purdis Farm, Ipswich. September 2015.

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Immature stages

Similar Suffolk Species
Large Thorn
Ennomos autumnaria
August Thorn
Ennomos quercinaria
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Dusky Thorn
Ennomos fuscantaria

(Haworth, 1809) 1914 / 70.235

Morley's Final Catalogue: Though formerly dubbed 'rare,' and known from a handful of localities, this species suddenly expanded over the entire County in 1895 amazingly. Probably now no remotest hamlet is without it, in the latter half of August. Even Monks Soham then sports it occasionally at light; and it ranges to the border at Gorleston. For a larva in 1857, cf. Ent. Wk. Intell. iii, 4.

Recent Suffolk Status: Common.

Life history: Single-brooded.

Identification: Large thorn is a bigger moth and August thorn rests with wings held flatter.

Habitat: Woodland, parkland, gardens.

Recorded in 50 (86%) of 58 10k Squares.
First Recorded in 1930.
Last Recorded in 2023.
Additional Stats

< Canary-shouldered Thorn | September Thorn >

Determination
List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10k Area
06/10/2023125TM38 - Bungay/Rumburgh
28/09/2023125TM25 - Wickham Market/Otley
26/09/2023126TL84 - Sudbury/Glemsford
25/09/2023125TM25 - Wickham Market/Otley
25/09/2023125TM58 - Carlton Colville/Kessingland
Show Details | 1990 to 2023 | 2000 to 2023 | Graph Key
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Forewing: 17-21mm.
Flight: One generation July-Oct.
Foodplant:   Ash
Red List: Near Threatened (NT)
GB Status: Common
BAP Status: Declining (Research only)
Verification Grade:  Adult: 1
 Immature Adult   [Show Flight Times]
     
Underlying maps using Digital Map Data © Norfolk Online Lepidoptera Archive - NOLA™ - Suffolk 2024. © James Wheeler - Norfolk Moths 2007 - 2024. Data © NOLA™ - Suffolk 2024
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