Species Account

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Summary Data

Season (Adult / Immature):

National Status: RDB3

Local Status: Scarce and very local resident.

Local Record: Grade 4   See here for explanation

Flight time: Jul-Aug.

Forewing: 12-14mm.

Foodplant: Creeping Willow, Aspen and birches

Regional breakdown:

Year first recorded18781976
Year last recorded20141976
Number of records3541
Number of individuals13431
Unique positions781
Unique locations101
Adult records3211
Immature records300

For the county, we have a total of 355 records from 11 sites. First recorded in 1878.


70.228 Dark Bordered Beauty 03
© Nick Lawman
70.228 Dark Bordered Beauty 02 female
© Dave Williamson, 17 Jul 2005
70.228 Dark Bordered Beauty 01 male
© Damian Money

Species Account

Sutton & Beaumont, 1989: Strensall Common (VC62) is a nationally famous site for this species and here its status has been charted from 1894 to the present by the York and District Field Naturalists' Society (JP pers. comm.). With probably only one other English site and a few in Scotland it is heartening that it is still plentiful at Strensall, with records right up to 1988.

Beaumont, 2002:
VC62. Strensall Common, continues to occur commonly.

2012 (CHF): A fire in the autumn of 2009 destroyed one of the main areas for the moth on Strensall Common and two cold winters have not helped the foodplant, so numbers have been lower than usual for the last two years. This species continues to be closely monitored. There is a single record from upper Teesdale in 1976 but the moth has not been refound there.

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