Species Account

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Summary Data

Season (Adult / Immature):

National Status: Common

Local Status: Scarce and thinly distributed or restricted resident.

Local Record: Grade 2   See here for explanation

Flight time: One generation, Jun-Jul.

Forewing: 21-26mm.

Foodplant: Woody plants. Hazel, birches, Honeysuckle etc.

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 recorded195519851955
Year last recorded201120112011
Number of records584181204
Number of individuals1290742728
Unique positions1176246
Unique locations926196
Adult records561171156
Immature records000

For the region, we have a total of 1204 records from 196 sites. Earliest record on file is in 1955.


2150 Grey Arches 03 larva
© Jenny Seawright
2150 Grey Arches 02
© Martin Cade, 30 Jun 2008
2150 Grey Arches 01
© Tom Morris

Species Account

For further information refer UK Moths.

Davey, P., 2009: A frequent species in southern Britain, more local further north, feeding on various herbaceous plants before hibernation and the young foliage of shrubs and trees the following spring. In Dorset, the moth is frequent in deciduous woodland, rising to common in old oak/birch woods. The moth is rarely encountered well away from woodland habitat, however, these light trap records are from virtually tree-less habitat and suggest occasional dispersal: West Bexington, on 13 July 1996, 2 July 1998, 3 July, 4 July, 6 July 2006 (R Eden), Portland, on 30 June 1986, 2 July 1986 (MR), 1 July 2008 (M Cade), Durlston, 24 June 2006 (P Davey).

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