Species Details

ABH: 65.014

BF: 1658

Family: Drepanidae

Subfamily: Thyatirinae

Taxon: Cymatophorina diluta

=Cymatophorima diluta hartwiegi

Authority: ([Denis & Schiffermüller], 1775)

Vernacular: Oak Lutestring

Account: Local in mature oak woodland throughout England, also appearing in some rural gardens, a species of conservation concern under the UK Biodiversity Action Plan. Sparsely recorded, and decreasing, away from extensive woods, but still reasonably common in suitable habitat in Hampshire and the northern half of the Isle of Wight. Wingspan 33-36 mm. The only thyatirid with two distinct brown fascia. Larva feeds on Pedunculate Oak and Sessile Oak, over-wintering as an egg.

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: 3 Aug (2024) — 10 Oct (2019)

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: Endangered (EN)

UK BAP: BAP(R)

WCA:

Click here to view the full geology map of Surrey.

Verification Grade: 1 — Relatively easily identified 👌

Further Information: https://www.ukmoths.org.uk/species/cymatophorina-diluta/

Statistics

* Based on adult records only.

Records: 410

Individuals: 1444

Earliest Year: 1912

Latest Year: 2025

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