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Oblique Carpet
Orthonama vittata (Borkhausen, 1794)
Geometridae: Larentiinae
1719 / 70.046
Photo © Jill Warwick,  SE328717: Sharow Grange, VC65

Similar Yorkshire Species: None
Forewing: 11-14mm.
Flight: May - June, August - September
Foodplant:   Marsh Bedstraw, Heath Bedstraw
Red List: Least Concern (LC)
GB Status: Common
Former Status: Local
Verification Grade:  Adult: 3

Yorkshire Status: Local resident.

This is a moth of damp areas, the larvae feeding on marsh bedstraw and sometimes other bedstraws. Porritt knew it from Askham Bog, Pontefract and Scarborough. Nationally it has been lost from many areas but in Yorkshire the situation is a little more encouraging. The Atlas tells us that the Vale of York is a particular national stronghold. This is almost entirely due to large numbers appearing in the Rothamsted trap at Wheldrake and also big counts at Askham Bog. A count of 42 at Wheldrake on 23/6/2015 remains our biggest count. Alas we have no RIS traps left in Yorkshire now, though there is still plenty of trapping in the Lower Derwent Valley. In recent years we have been receiving more records in the western limestone Dales where it seems to appear in small numbers at new sites every year.

Sutton & Beaumont, 1989: There have been several new sites found for this species since the late 1960s. However it is not yet possible to ascertain whether there are any established colonies or just mere wanderers from other areas. It must be spreading to some extent, however, to produce so many odd sightings.

Retained Specimen / Photograph will be Required.

Recorded in 54 (27%) of 200 10k Squares.
First Recorded in 1883.
Last Recorded in 2023.
Additional Stats

Latest 5 Records
Date#VC10k Area
05/09/2023261SE64 - Wheldrake
22/08/2023+63SD95 - Skipton / Gargrave
22/08/2023161SE64 - Wheldrake
21/08/2023264SD85 - Hellifield / Long Preston
19/08/2023364SE54 - York (S/W)
Further info: Orthonama vittata
UK Moths
Mothdissection UK Yorkshire Moths (Full)
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