Species Account

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Summary Data

Season (Adult / Immature):

National Status: Nb

Local Status: Rare and very local resident.

Local Record: Grade 4   See here for explanation

Flight time: One generation, Sep-Oct.

Forewing: 21-28mm.

Foodplant: Broadleaved trees.

Regional breakdown:

Year first recorded19821884
Year last recorded20111884
Number of records211
Number of individuals200
Unique positions31
Unique locations41
Adult records211
Immature records00

For the county, we have a total of 22 records from 5 sites. First recorded in 1884.


1911 Large Thorn 04
© Dave Shenton
1911 Large Thorn 03
© M F Stoyle , 07 Sep 2008
1911 Large Thorn 02
© John William Cooper
1911 Large Thorn 01
© John William Cooper

Species Account

Sutton & Beaumont, 1989: Porritt (1904) mentioned a specimen of this moth being found in Leeds market (VC64), but since it was thought to have been imported with produce there was doubt as to whether it should be added to the Yorkshire list. This problem was resolved when one was captured at Spurn (VC61) on 17 September 1982 by B.R. Spence, a definite Yorkshire specimen.

2012 (CHF): There have been several more records in the Spurn area in recent years. There are no records further north.

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