Geometridae : Larentiinae
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Gem
Nycterosea obstipata

(Fabricius, 1794) 1720 / 70.047
=Orthonama obstipata
Photo © Charles Fletcher, 11 Oct 2005,  Bishop Monkton, VC64

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Similar Yorkshire Species: None
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Yorkshire Status: Scarce and local migrant/wanderer.

This migrant species appears in small numbers most years and, like Vestal, is often seen in inland locations. Sometimes it fails to appear at all and at other times we can get records into double figures. The maximum is 14 records in 2010. It seems reluctant to visit the north of the county. There is no evidence that it has ever over-wintered in Yorkshire, but moths arriving in early summer will produce a second generation in autumn. It is sexually dimorphic - the sexes looking very different.

Sutton & Beaumont, 1989: A migrant species which only rarely reaches as far north as Yorkshire. There have been a few records since the last list (YNU, 1970), all in the centre or south of the County.

Retained Specimen / Photograph will be Required.

Recorded in 44 (22%) of 200 10k Squares.
First Recorded in 1910.
Last Recorded in 2023.
Additional Stats

< Oblique Carpet  |  Red Carpet >
Forewing: 12-14mm
Flight: Arrives April - November
Foodplant:   Various low-growing plants
GB Status: Immigrant
Verification Grade:  Adult: 3
List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10k Area
05/11/2023161TA26 - Flamborough Head (South)
29/10/2023161TA02 - Hessle
27/10/2023163SE51 - Askern
25/10/2023261TA07 - Hunmanby
24/10/2023164SE33 - Leeds
  Immature   Adult   [Show Flight Weeks]
Show Details | 1990 to 2023 | 2000 to 2023 | Graph Key
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