Geometridae : Archiearinae
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Photo © Peter Buchner - Lepiforum

Immature stages

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

(Hübner, 1803) 1662 / 70.204
=Boudinotiana notha

Norfolk status
Scarce.
Occurring locally in the southern half of England.

Known from one site in Norfolk (confirmed in 2021, Phil Heath) Recent investigations by Phil have uncovered previously unknown reports of regular sightings at this site, possibly since the 1960s!

Identification can be made by differences in the male antennae, which are finely serrated in Orange Underwing and slightly feathered in Light Orange Underwing.
The underside of the hindwing of Orange Underwing shows an orange band that projects centrally into a dark outer band, often reaching outer margin. Light Orange Underwing shows a dark outer band that is is unbroken, and the central projection of the orange band is absent. (MBGBI Vol 7 part 2)

Barrett [VCH 1901] Brephos notha, Hb.
" Has been taken at Horsford near Norwich"

(Note 2021 genus name change to Archiearis)

Retained Specimen / Photograph will be Required.

Recorded in 3 (4%) of 74 10k Squares.
First Recorded in 1873.
Last Recorded in 2023.
Additional Stats

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Determination
List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10kGeneral Area
19/04/2023127TG02Foxley Wood
23/04/20211027TG02Foxley Wood
1914+28TF60Downham / Fincham
1907128TF60Shouldham
1873 to 1913+27TG11Horsford
Show Details | 1990 to 2023 | 2000 to 2023 | Graph Key
Express Record Light Orange Underwing
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Forewing: 15-17mm.
Flight: March - April.
Foodplant:   Aspen
Red List: Least Concern (LC)
GB Status: Nationally Scarce
Former Status: Nationally Scarce B
Verification Grade:  Adult: 3
 Immature Adult

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Underlying maps using Digital Map Data © NOLA™ 2024. © Lepidoptera UK - Jim Wheeler - Norfolk Moths 2007 - 2024. Data © NOLA™ 2024
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