Species Account

Select species and region:



Summary Data

Season (Adult / Immature):

National Status: Common

Local Status: Common and fairly widespread resident.

Local Record: Grade 1   See here for explanation

Flight time: One generation, Jul-Oct.

Forewing: 16-20mm.

Foodplant: Downy and Silver Birch, Alder, Limes, Elms.

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 recorded190519821905
Year last recorded201120112011
Number of records23281514958
Number of individuals627727113096
Unique positions19421430
Unique locations15718350
Adult records21731494644
Immature records000

For the region, we have a total of 4958 records from 350 sites. Earliest record on file is in 1905.


1913 Canary-shouldered Thorn 04
© Martin Wood
1913 Canary-shouldered Thorn 03
© Gillian Nash, August 2015
1913 Canary-shouldered Thorn 02
© Tom Morris
1913 Canary-shouldered Thorn 01
© Terry Box

Species Account

For further information refer UK Moths.

Davey, P., 2009: A frequent species in Britain, the larva feeding on birch (Betula spp.), alder (Alnus spp.), sallow (Salix spp.), and a variety of other deciduous tree and shrub species. In Dorset, the moth is widespread and common to abundant in old deciduous woodland, particularly those with sizeable stocks of host foodplant.

Diagnostic: yellow thorax, so yellow that wasps often target and kill the moth as if it were a threat to them.


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