Geometridae : Archiearinae
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Photo © Neil Sherman,  Purdis Farm, Ipswich. March 2004.

Similar Suffolk Species
Light Orange Underwing
Archiearis notha
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Orange Underwing
Archiearis parthenias

(Linnaeus, 1761) 1661 / 70.203

Morley's Final Catalogue: The patchy distribution is surely owing merely to lack of March observers; probably common in all birch-woods. The collective 'Brepha' - as the genus is actually spelled by Stephens (Catalog. Brit. Insects 1829, p. 113) - was a Moth well-known to the Victorian workingmen-collectors of Ipswich. Several about Ipswich on 27 March 1861 (Tim Last, Ent. Wk. Intell. x, 27); somewhat common outside Bentley Woods in 1899 (Platten), 1936 (Bp.) and 1894-5, and on Foxhall heath (Mly). West Stow Wood (Suff. Inst. iv, 1870, 221); Mildenhall. Worlingham (Crf); many at Blythburgh Wood on 22 March 1936 (Btn); Herringfleet on 22 March 1936 (D, Mr).

Recent Suffolk Status: Local, mainly on heathland with larger Birch trees and some woodland sites.

Life history: Single brooded in the spring. Adults fly high around Birch on warm sunny days. They can been seen much closer feeding on moisture around puddles on tracks near the foodplant trees and at blossoming trees like Sallow and Blackthorn.

Identification: Male Light orange underwing has lightly feathered antennae, Orange underwing has finely serrated antennae. Orange underwing has more white on the forewing than Light orange underwing and is usually browner in colour. The underside of the hindwing of Light Orange underwing has an unbroken outer dark band, this band is broken by an orange patch in Orange underwing.

Habitat: Mainly wooded heathlands in the Brecks and Sandlings, plus some woods which contain good areas of Birch.

Recorded in 21 (36%) of 58 10k Squares.
First Recorded in 1861.
Last Recorded in 2023.
Additional Stats

< Early Tooth-striped  |  Light Orange Underwing >

Determination
List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10k Area
09/04/2023625TG40 - Belton/Burgh Castle
11/04/2022225TM34 - Hollesley/Rendlesham Forest
25/03/20221025TM46 - Minsmere/Leiston
25/03/2022425TM47 - Blythburgh/Dunwich
24/03/2022126TL87 - Barnham/West Stow
Show Details | 1990 to 2023 | 2000 to 2023 | Graph Key
Express Record Orange Underwing
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Copyright © Jim Wheeler 2024
   

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Forewing: 16-19mm.
Flight: One generation. Mar-April.
Foodplant:   Downy Birch, Silver Birch
Red List: Least Concern (LC)
GB Status: Common
Former Status: Local
Verification Grade:  Adult: 2
 Immature Adult
     
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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