Geometridae : Larentiinae
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Photo © Raymond A Watson,  Hollesley, Suffolk.

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Similar Suffolk Species: None
 
Grass Rivulet
Perizoma albulata

([Denis & Schiffermüller], 1775) 1807 / 70.137

Morley's Final Catalogue: Somewhat local, but often in the utmost profusion in marshes. Hacheston; Battisford; Aldeburgh, Beccles (Mr) Bungay (Mn), Shipmeadow in 1933 (Mly). Common at Brandon staunch in June 2010 (Elliott) and always in Barton Mills marshes; Mildenhall and Tuddenham Fenn (Sparke). Not noted from Ipswich.

Recent Suffolk Status: Probably extinct as a breeding species in the county with no known populations. More recent records are thought to be migrants or wanderers, being close to the coast.

Life history: Single-brooded. Adults readily disturbed from the sward by day as well as coming to light.

Identification: No similar species in the county.

Habitat: Chalky grassland and wet meadows.

Recorded in 14 (24%) of 58 10k Squares.
First Recorded in 1910.
Last Recorded in 2023.
Additional Stats

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Determination
List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10k Area
11/06/2023125TM25 - Wickham Market/Otley
02/06/2023126TL96 - Thurston/Elmswell
02/08/2022+25TM46 - Minsmere/Leiston
03/06/2019125TM33 - Bawdsey/Felixstowe
02/06/2019125TM44 - Orford Ness
Show Details | 1990 to 2023 | 2000 to 2023 | Graph Key
Express Record Grass Rivulet
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Copyright © Jim Wheeler 2024
   

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Forewing: 10-12mm.
Flight: One generation May-July.
Foodplant:   Yellow-rattle
Red List: Least Concern (LC)
GB Status: Common
BAP Status: Declining (Research only)
Former Status: Local
Verification Grade:  Adult: 2
 Immature Adult
     
Underlying maps using Digital Map Data © Norfolk Online Lepidoptera Archive - NOLA™ - Suffolk 2024. © James Wheeler - Norfolk Moths 2007 - 2024. Data © NOLA™ - Suffolk 2024
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