Species Account

Select species and region:



Summary Data

Season (Adult / Immature):

National Status: Local

Local Status: Common and widespread resident.

Local Record: Grade 2   See here for explanation

Flight time: One generation, Jul-Aug

Forewing: 18-28mm

Foodplant: Various trees

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 recorded1905200719821905
Year last recorded2011200720112011
Number of records127811002758
Number of individuals2617122265710
Unique positions230115492
Unique locations183113394
Adult records117511002552
Immature records1002

For the region, we have a total of 2758 records from 394 sites. Earliest record on file is in 1905.


2033 Black Arches (female)
© Gillian Nash, 26 July 2021
2033 Black Arches 06
© Will Bown
2033 Black Arches 05
© Julian Francis
2033 Black Arches 04
© Gillian Nash, July 2017
2033 Black Arches 03
© Mike Hetherington
2033 Black Arches 02
© Tom Morris
2033 Black Arches 01
© Phyl England

Species Account

For further information refer UK Moths.

Davey, P., 2009: A species restricted to southern England, the larva feeding on oak (Quercus spp.). In Dorset, the moth is common in oak woods, but scarce otherwise. The national norm is for adults to be on the wing in late July and August; it is likely that the following are second brood individuals: Arne Wood, on 10 October 1985 (B Pickess), Hurn, on 24 September 1998 (M Jeffes). Dispersal from outside the county or immigration from abroad may account for the following light trap records during 2004: Walditch, on 7 August (M Parsons), West Bexington, on 25 July (R Eden), Preston, on 27 July, 28 July (R Lambert).

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