Species Account

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Summary Data

Season (Adult / Immature):

National Status: Nb

Local Status: Rare and restricted resident and wanderer.

Local Record: Grade 4   See here for explanation

Flight time:



IMPORTANT - Please note that the maps and accounts are provisional, subject to change and further update.  The whole dataset still needs to go through the final verification process and it is likely that a very small number of records will not satisfy the present requirements and there are other records that have not been formally submitted.  The information is for guidance only.

Record breakdown:

Year first recorded19961996
Year last recorded20112011
Number of records2958
Number of individuals54108
Unique positions1836
Unique locations1734
Adult records2754
Immature records00

For the region, we have a total of 58 records from 34 sites. Earliest record on file is in 1996.


2191 Double Line 06
© Julian Francis
2191 Double Line 05
© Gillian Nash, July 2015
2191 Double Line 04
© Gillian Nash
2191 Double Line 03
© James Watson
2191 Double Line 02
© Les Hill
2191 Double Line 01
© Dave Foot

Species Account

For further information refer UK Moths.

Davey, P., 2009: A declining species restricted to south-west Wales, Devon and Cornwall, Cheshire and a few counties in south-east England, the larva feeding nocturnally on wood-rush (Luzula spp.), cock's-foot (Dactylus glomerata) and wood meadow-grass (Poa nemoralis). In Dorset, the moth was discovered by Dr P Sterling on a large estate containing old, mixed woodland and parkland, situated at a relatively elevated position of one hundred and fifty metres above mean sea level. Most of the moths were trapped in the deer wardens garden with none of the preferred larval 'clumpy grass' microhabitat nearby. Until the habitat requirements of the Double-line at Melbury Park are better understood it is not possible to propose recommendations to protect and promote this fine species at the site: Evershott, (R Dyke), Melbury Park, two on 27 June 1996, two on 19 July 1996, 17 July 1999, six on 13 July 2002, five on 26 June 2003, fourteen on 26 June 2004 (Dr P Sterling et al).

The following light trap records are believed to have dispersed from moorland to the west of Dorset coincident with a breezy south-west to westerly airflow: Puddletown, on 2 July 2004 (H Wood Homer), Milton-on-Stour, on 1 July 2004 (J Burge).

See background to species accounts.  Index of Vernacular names - Search - Random Species