Species Details

ABH: 73.331

BF: 2121

Family: Noctuidae

Subfamily: Noctuinae

Taxon: Diarsia dahlii

Authority: (Hübner, [1813])

Vernacular: Barred Chestnut

Account: Local in broad-leaved woodland, moorland and wooded heathland throughout much of Scotland, northern England and Ireland. Some forms of Ingrailed Clay D. mendica may be mistaken for male Barred Chestnut, but have the costa of the forewing less strongly arched, the hindwing paler and usually with a faint postmedian band and a differently marked underside. The female can be confused with Purple Clay D. brunnea (MBGBI Vol 9). Larva feeds on various woody plants and herbaceous plants, including Bilberry, Bramble, Sallow, Silver Birch and Downy Birch.

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: 32 — 42 mm

Surrey Flight Period: 8 Aug (2009) — 20 Sep (1976)

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

Foodplant: Betula sp. (a birch), Vaccinium myrtillus (Bilberry).

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, an image may be required 🤔
Further Information: https://www.ukmoths.org.uk/species/diarsia-dahlii/
Statistics

* Based on adult records only.

Records: 33

Individuals: 42

Earliest Year: 1962

Latest Year: 2011

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