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Gem
Nycterosea obstipata (Fabricius, 1794)
Geometridae: Larentiinae
1720 / 70.047

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Similar Species: None
Forewing: 12-14mm.
Flight: Arrive April-Nov.
Foodplant:   Various low-growing plants.
Red List:
GB Status: Immigrant
Verification Grade:  Adult: 2
Status
Morley's Final Catalogue: No more than two specimens seem to be known with us. One taken at Bury by Nurse, and misnamed Bolitobia fuliginaria (Ent. 1878, 321); and a second that was attracted to electric light in the middle of Ipswich on 5 September 1893 (Mly).

Recent Suffolk Status: A fairly regular immigrant species.

Life history: Multi-brooded. Does breed in some years but cannot survive the UK winter at any stage currently. Appearing later in recent years, into November with a very late/ early record on 1st January 2022 (E. Jackson).

Identification: Unmistakeable. Males and females differ in colour, with females being much darker.

Habitat: Can appear in a wide variety of habitats including gardens.

Recorded in 30 (52%) of 58 10k Squares.
First Recorded in 1893.
Last Recorded in 2023.
Latest 10 Records
Date#VC10kArea
03/11/2023125TM23Felixstowe/Landguard Point
31/10/2023125TM34Hollesley/Rendlesham Forest
31/10/2023125TM58Carlton Colville/Kessingland
30/10/2023125TM23Felixstowe/Landguard Point
30/10/2023+25TM34Hollesley/Rendlesham Forest
28/10/2023125TM23Felixstowe/Landguard Point
26/10/2023125TM58Carlton Colville/Kessingland
23/10/2023125TM23Felixstowe/Landguard Point
23/10/2023125TM59Lowestoft
22/10/2023125TM23Felixstowe/Landguard Point
Further info: Nycterosea obstipata
 
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