Geometridae : Archiearinae
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Photo © Oliver Wadsworth,  Wyre Forest VC37. 21/04/2018

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Similar West Midlands Species: None
Orange Underwing
Archiearis parthenias

(Linnaeus, 1761) 1661 / 70.203

A fairly common resident.

A species of birch scrub and heathland.

Overwinters as a pupa. Adults fly in the sunshine during the day and can be seen high above the trees or they drop to the ground when the sun goes in.

Note This species is very similar to Light Orange Underwing but lack of Aspen should help to eliminate that species. If you think you have it then the underside of the hind wing should be examined. Light Orange has an unbroken dark band around the margin, not or only slightly indented. On Orange Underwing this band is broken or strongly indented.

Recorded in 72 (51%) of 140 10k Squares.
First Recorded in 1857.
Last Recorded in 2022.
(Data up to end 2022)
Additional Stats

Forewing: 16-19mm
Flight: March - April
Foodplant:   Biches
Red List: Least Concern (LC)
GB Status: Common
Former Status: Local
Verification Grade:  Adult: 1
< Early Tooth-striped  |  Light Orange Underwing >
List Species Records   [Show All Latest]
Latest 5 Records (data up to end 2022)
Date#VC10k Area
26/04/2022+VC39 - StaffordshireSP09
26/04/20221VC39 - StaffordshireSP09
16/04/20221VC37 - WorcestershireSO95
16/04/20221VC37 - WorcestershireSO95
16/04/20221VC37 - WorcestershireSO95

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