Species Account

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Summary Data

Season (Adult / Immature):

National Status: Vagrant/Accidental

Local Status: Very rare migrant.

Local Record: Grade 4   See here for explanation

Flight time: -

Forewing: M 15-17mm, F 18-20mm

Foodplant: Sessile Oak, Pedunculate Oak, Turkey Oak and Evergreen Oak.

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 recorded20042004
Year last recorded20062006
Number of records24
Number of individuals24
Unique positions24
Unique locations24
Adult records24
Immature records00

For the region, we have a total of 4 records from 4 sites. Earliest record on file is in 2004.


2022 Oak Processionary 03
© Henry Gibbens, 31 Jul 2020
2022 Oak Processionary 02
© Martin Cade, 17 Aug 2006
2022 Oak Processionary 01
© Martin Cade, 17 Aug 2006

Species Account

For further information refer UK Moths.

Davey, P., 2009: A rare immigrant, the larva feeding on oak (Quercus spp.). The moth is a pest species occurring in northern Spain, southern and eastern France and eastwards across central and eastern Europe, the larvae living gregariously in webs and often defoliating areas of forest. In Dorset, four moths have been recorded. The first record, Swanage (Mrs J Colson; Entomologist 374), was not believed at the time: "Any lepidopterist who has first-Subsequent light trap records indicate that the moth does indeed manage to make it to our shores from the Continent on occasion: Portland, light on 18 August 2006 (M Cade), Swanage, on 17 August 2004 (R Cox), Worth Matravers, on 18 August 1996 (M Townsend).

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