Species Details

ABH: 70.267

BF: 1943

Family: Geometridae

Subfamily: Ennominae

Taxon: Hypomecis roboraria

Authority: ([Denis & Schiffermüller], 1775)

Vernacular: Great Oak Beauty

Account: Nationally scarce (Nb) in ancient woodland and mature oak woodland throughout much of southern England The main confusion species is Pale Oak Beauty H. punctinalis, which differs in plain apex of underwing of forewing. Larva feeds on Pedunculate Oak.

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: 60 — 68 mm

Surrey Flight Period: 24 May (1961) — 15 Sep (2024)

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

Foodplant: Quercus sp. (an oak).

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: 2 — Care needed to identify 🤔
Further Information: https://www.ukmoths.org.uk/species/hypomecis-roboraria/
Statistics

* Based on adult records only.

Records: 400

Individuals: 460

Earliest Year: 1902

Latest Year: 2025

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