Species Details

ABH: 70.204

BF: 1662

Family: Geometridae

Subfamily: Archiearinae

Taxon: Archiearis notha

Authority: (Hübner, [1803])

Vernacular: Light Orange Underwing

Account: Nationally scarce (Nb) in ancient woodland and open woodland in parts of southern England The most likely confusion species is Orange Underwing A. parthenias, which see for differences. Larva feeds on Aspen, over-wintering as a pupa.

Accounts provided by and used with the kind permission of Mike Wall, Hampshire County Moth Recorder. These will in due course be gradually replaced with species accounts with a Surrey context.

Wingspan: 33 — 36 mm

Surrey Flight Period: 20 Mar (2024) — 4 May (2022)

The flight period of overwintering adults are not given. See the flight chart below the distribution map.

Foodplant: Populus tremula (Aspen).

Foodplant accounts are from the HOSTS database — Natural History Museum, London, UK. (CC0).

Status: Least Concern (LC)

UK BAP:

WCA:

Click here to view the full geology map of Surrey.

Verification Grade: 5 — Adults unidentifiable 😖 or pending grading 🧐
Further Information: https://www.ukmoths.org.uk/species/archiearis-notha/
Statistics

* Based on adult records only.

Records: 47

Individuals: 55

Earliest Year: 1931

Latest Year: 2025

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