Geometridae : Ennominae
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Early Thorn
Selenia dentaria

(Fabricius, 1775) 1917 / 70.237
Photo © Dave Hatton

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Similar Yorkshire Species: None
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Yorkshire Status: Very common and widespread resident.

Sutton & Beaumont, 1989: Occurs locally in wooded areas in all five vice-counties. Occasionally noted as a wanderer in other habitats.

Current status (CHF, 2011): This moth has been lost to central England and is retreating to the uplands, the celtic fringes, and the south-east. There are no recent records from south Yorkshire.

Argus 69, 2013: Whilst this species has disappeared from lowland Yorkshire, it is still doing well in upland woodland. A remarkable 23 were trapped on the YNU outing to Grass Wood in VC64, 7.6.2013.

Recorded in 164 (82%) of 200 10k Squares.
First Recorded in 1846.
Last Recorded in 2023.
Additional Stats

< September Thorn  |  Lunar Thorn >
Forewing: 14-23mm
Flight: February - May and July - September
Foodplant:   Blackthorn, Hawthorn, Hazel, other woody plants
Red List Status: Least Concern (LC)
GB Status: Common
Verification Grade:  Adult: 1
List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10k Area
23/08/2023164SE44 - Wetherby / Tadcaster
21/08/2023162SE65 - York (E)
18/08/2023162NZ71 - Staithes
16/08/2023163SK59 - Maltby
15/08/2023162NZ61 - Guisborough
  Immature   Adult
Show Details | 1990 to 2023 | 2000 to 2023 | Graph Key
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