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Oak Processionary
Thaumetopoea processionea (Linnaeus, 1758)
Notodontidae: Thaumetopoeinae
2022 / 71.001
Photo © Michael Kerr,  07/08/2020 - Sporle (garden)

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Similar Species
Pine Processionary
Thaumetopoea pityocampa
Pale Eggar
Trichiura crataegi
Forewing: 16-17mm (f), 14-16mm (m)
Flight: July - September
Foodplant:   Oaks
Red List:
GB Status: Naturalised / Immigrant
Former Status: Immigrant
Verification Grade:  Adult: 3
Status
Former rare immigrant/adventive, much more common in recent years.

First Norfolk record in 1995 at Sea Palling (Alec Kolaj) the 8th record for Britain at the time.

Several adult moths recorded in Norfolk in recent years. So far, no larvae have been seen.

In Europe it is a pest species, the larvae feeding in large numbers on Oak.
Contact with the hairs of the larvae can cause severe (occasionally life-threatening) symptoms.

Similar to Pale Eggar, but shows small crescent mark in the centre of the forewing.

Notifiable Species
If you suspect you have found an Oak Processionary nest or caterpillars in Norfolk please report it to forestresearch.gov.uk via TreeAlert.
(authorities do not require reports of adult moths)

Retained Specimen / Photograph will be Required.

Recorded in 26 (35%) of 74 10k Squares.
First Recorded in 1995.
Last Recorded in 2024.
Additional Stats

Latest 10 Records
Date#VC10kArea
31/08/2024227TG10Marlingford
13/08/2024227TG42Eccles
13/08/2024127TM18Tibenham
13/08/2024128TF91Dereham 
13/08/2024127TG11Costessey
12/08/2024127TG02Hindolveston
12/08/2024128TF92North Elmham
11/08/2024127TG01Lyng / Sparham
10/08/2024127TG10Cringleford (UEA)
07/08/2024127TG11Costessey
Further info: Thaumetopoea processionea
 
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