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Reddish Light Arches
Apamea sublustris (Esper, 1788)
Noctuidae: Xyleninae
2323 / 73.164
Photo © Stephen Youngs,  20/06/2019 - Peddars Way

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Similar Species
Pale Shining Brown
Polia bombycina
Light Arches
Apamea lithoxylaea
Forewing: 18-21mm.
Flight: One generation June-July.
Foodplant:   Grasses.
Red List: Least Concern (LC)
GB Status: Common
Former Status: Local
Verification Grade:  Adult: 2
Very similar to Light Arches but generally darker.
Grassland on chalky and limestone soils.

Recorded primarily locally in Breckland, with occasional records from other locations (confirmation required).

Characteristic dark wedges on the outer edge of the forewing separate this species from Light Arches.

Please provide a photo if recorded away from the Brecks, as several records from East Norfolk have been proved to be misidentifications.

Recorded in 33 (45%) of 74 10k Squares.
First Recorded in 1873.
Last Recorded in 2024.

Latest 10 Records
08/06/2024128TF70Cockley Cley
03/07/2023+28TL79Cranwich Heath
02/07/2023128TL99Thompson Water
01/07/2023128TL78Weeting Heath
30/06/2023128TM09Great Ellingham
28/06/2023128TF92North Elmham
27/06/2023128TF71Marham Fen
26/06/2023+28TL79Cranwich Heath
Further info: Apamea sublustris
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