Species Account

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Summary Data

Season (Adult / Immature):

National Status: Nb

Local Status: Scarce and local resident.

Local Record: Grade ?   See here for explanation

Flight time: One generation, Jul-Aug

Forewing: 17-20mm.

Foodplant: Common Nettle, Dog's Mercury and Oxlip.

Regional breakdown:

Year first recorded188319611883
Year last recorded201420142014
Number of records576139
Number of individuals64139271
Unique positions311420
Unique locations281521
Adult records546038
Immature records000

For the county, we have a total of 157 records from 64 sites. First recorded in 1883.


2131 Square-spotted Clay 02
© Charles Fletcher, 27 Jul 2005
2131 Square-spotted Clay 01
© Damian Money

Species Account

Sutton & Beaumont, 1989: A very local species in the North of England and only doubtfully recorded before 1967 since there were no specimens available for examination. This species was definitely added to the County list in 1967 (YNU, 1970) and has now been found in several localities.

2012 (CHF): Formerly a National BAP species, it has been taken off the list as numbers have grown. It has either become much more common in the county or numbers have been previously underestimated due to little trapping in upland areas of VC65. In parts of upper Swaledale and Wensleydale in can be common in wooded areas eg 77 at Keld on 24.7.2009 and 71 at Ballowfields/Ox Close on 6.8.2010 though strangely it has never been reported over the border in Lancashire. The north and east of VC62 also holds good populations though not in such big numbers.

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