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Marsh Carpet
Gagitodes sagittata (Fabricius, 1787)
Geometridae: Larentiinae
1810 / 70.140
Photo © Mike McCarthy,  10/07/2015 - Taverham

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Similar Norfolk Species: None
Forewing: 13-17mm.
Flight: One generation June-July.
Foodplant:   Common Meadow-rue. Lesser Meadow-rue. (Ripening seeds)
Nat Status: Nationally Scarce A
Verification Grade:  Adult: 3
Norfolk Status
Extremely Rare.
Wetland localities inc fens, marshes and wet meadows.
Established colony along the Norfolk and Suffolk border at Lakenheath Fen/Botany Bay, where it was rediscovered in 2002 (last recorded 1984) and is monitored annually by the SMG.

Almost as famous as the Hollly Blue for erratic population change, at one time thought to be extinct because of its absence from all sites from 1940 to mid 1950s after which it was reported from many of them from Nottinghamshire to the Broads. It remains unpredictable, it may have a run of years at one site and then vanish for as long. The moth is rarely seen and we depend for data upon its beautifully cryptically coloured larva on seedheads of Thalictrum (Meadow Rue) G. Haggett (NMS No.55, 1999)

Several old Norfolk records, but only a few recent sightings of adults form Hockwold (close to the Suffolk colony at Lakenheath) and a few sightings along the Wensum valley and Norwich area.

Larvae recently rediscovered from a site in West Norfolk, the first larval records for decades! (J Wheeler, 2010) but not seen at the site since 2011. Larvae also recorded at a site in VC27 in 2013.

Retained Specimen / Photograph will be Required.

Recorded in 20 (29%) of 69 10k Squares.
First Recorded in 1762.
Last Recorded in 2019.

Latest 5 Records
Date#VC10k Area
07/08/2019128Confidential
07/08/2019128Confidential
07/08/2019428Confidential
31/07/2019128Confidential
07/07/2019327TG11 - Drayton/Swannington
Further info: Gagitodes sagittata
 
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