Species Account

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Summary Data

Season (Adult / Immature):

National Status: Common

Local Status: Fairly common and thinly distributed resident.

Local Record: Grade 1   See here for explanation

Flight time: One generation, Sep-Nov.

Forewing: 17-20mm

Foodplant: Monterey Cypress, Lawson's Cypress, Leyland Cypress, Juniper

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 recorded195919751959
Year last recorded201120112011
Number of records1408812978
Number of individuals31201356510
Unique positions11612256
Unique locations9911220
Adult records1206792570
Immature records216

For the region, we have a total of 2978 records from 220 sites. Earliest record on file is in 1959.


2240 Blair's Shoulder-knot 06
© Julian Francis
2240 Blair's Shoulder-knot 05 (left) Grey Shoulder-knot (right)
© Gillian Nash, November 2018
2240 Blair's Shoulder-knot 04
© Will Bown
2240 Blair's Shoulder-knot 03
© Les Hill
2240 Blair's Shoulder-knot 02
© Tom Morris
2240 Blair's Shoulder Knot 01
© Phyl England 30 Nov 2009

Species Account

For further information refer UK Moths.

Davey, P., 2009: A relatively recent colonist of England, first recorded on the Isle of White in 1951 and now found as far north as Lancashire, the larva feeding on cypress (Cupressussuga spp.). In Dorset, the first record was of eight moths trapped at Durlston in the first week of October 1959. The following year, it was found at Studland and over the next ten years it moved rapidly northwards and westwards to colonise much of the county. It is common wherever monterey cypress (Cupressus macrocarpa), leyland cypress (x Cupressocyparis leylandii) and lawson's cypress (Chamaecyparis lawsoniana) has been planted in hedges. The moth is found in Iberia, France and Belgium.

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