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73.331 (BF2121)

Barred Chestnut   

Diarsia dahlii
Adult: 2
Resident. Common.


The strongly curved leading edge on a rather broad forewing will identify it from similar species.

Recording Method.

Attracted to light, also comes to sugar and flowers.

Life cycle

One generation. Overwinters as a larva during September to early spring, feeding at night. Pupation takes place underground in a loose cocoon.

Larval foodplants

Larvae feed on Blaeberry, Bramble, willows and birches.


Broadleaved woodland and wooded moorland.


Douglas Robinson (1870-71) had found it common at sugar in July on Almorness (VC73). Gordon (1913) thought it was scarce in Wigtownshire, but he had noted it at sugar in the woods at Corsemalzie, Wigtownshire. Earliest date was 9th July 1905.

Sir Arthur Duncan (1909-84) during his lifetime had found it at Closeburn and Tynron (VC72). Archibald Russell (1944) listed it as occurring near Gatehouse of Fleet (VC73) during the years 1942-43.

During 1975-93 the four westerly Galloway Rothamsted stations provided all the records, while in Dumfriesshire, Waterside Mains reported it only twice and Caerlaverock not at all. Since then it has been trapped almost annually.

300 record(s) from 36 hectad(s) in D&G

VC74 VC73 VC72
Last recorded 2013 2022 2022

 UK Moths website - further information on species (with photos)

 East Scotland Butterfly Conservation website - national distribution maps and phenology

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