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Barred Rivulet
Perizoma bifaciata (Haworth, 1809)
Geometridae: Larentiinae
1804 / 70.134
Photo © Steve Woolnough,  3rd August 2018 Mendlesham Green

Similar Suffolk Species: None
Forewing: 9-11mm.
Flight: One generation July-Aug.
Foodplant:   Red Bartsia.
Red List: Least Concern (LC)
GB Status: Common
Former Status: Local
Verification Grade:  Adult: 2

Recent Suffolk Status: Very local.

Habitat and life history: Mainly found on chalk soils but does also occur on sandy soil where the foodplant Red Bartsia grows. The pupa may overwinter for up to five years. It flies in July and August and is attracted to light.

Identification: The forewing can vary in colour from light golden brown to dark red brown, often with a wide, darker coloured band in the centre.

Recorded in 26 (45%) of 58 10k Squares.
First Recorded in 1890.
Last Recorded in 2021.

Latest 5 Records
Date#VC10k Area
24/07/2021126TL94 - Lavenham/Boxford
03/08/2018125TM06 - Bacton/Stowupland
13/08/2016126TL96 - Thurston/Elmswell
24/07/2016125TM49 - Somerleyton/Beccles
09/08/2013126TL84 - Sudbury/Glemsford
Further info: Perizoma bifaciata
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