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Frosted Yellow
Isturgia limbaria (Fabricius, 1775)
Geometridae: Ennominae
1899 / 70.220
Photo © Natural History Museum London,  Collection Specimens. BMNH(E)1845241

Similar Norfolk Species: None
Flight: May - June. July - August.
Foodplant:   Broom
Red List: RE (Regionally Extinct)
Ex Status: Extinct
Verification Grade:  Adult: 3
Norfolk Status
Extinct in the British Isles.
This day-flying moth was last recorded in Essex, 1914. Formerly known from Stowmarket in Suffolk and elsewhere in East Anglia. (also known from northern-central Scotland)

Eight specimens in collections at the BMNH are labelled "Norfolk Harwood 16/5/95" This likely refers to Mr W. H. Harwood from Essex 1840 - 1917, professional entomologist, and dealer in natural history specimens.
No listing for this species was made by Barrett in Victorian County History. The source of these 1895 specimens, or even if genuinely from Norfolk, is open to conjecture.

With thanks to Roy Leverton who found the museum specimens (03/2020) and the BMNH for allowing use of photos.

Verification Grade Comment: Considered Extinct

Retained Specimen / Photograph will be Required.

Latest 5 Records
Date#VC10k Area
16/05/18958-0 - Norfolk (unknown locality)
Further info: Isturgia limbaria
 
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