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Lesser Swallow Prominent
Pheosia gnoma (Fabricius, 1777)
Notodontidae: Notodontinae
2006 / 71.018
Photo © Nancy Stedman,  SE006466: High Farnhill, VC64

Similar Yorkshire Species
Swallow Prominent
Pheosia tremula
Forewing: 20-26mm
Flight: April - June and July - August
Foodplant:   Birch
Red List: Least Concern (LC)
GB Status: Common
Verification Grade:  Adult: 2

Yorkshire Status: Common and widespread resident.

Sutton & Beaumont, 1989: Recorded fairly commonly in all five vice-counties in areas where birch is well established such as heathlands in the Vale of York. It is also the most frequent Prominent in Wharfedale (WNS).

2012 (CHF): Common and widespread with two overlapping broods. No recent changes in numbers or distribution. There can be impressive numbers in birch woodland, eg 77 at North Cliffe Wood on 6.8.2010.

Recorded in 163 (82%) of 200 10k Squares.
First Recorded in 1883.
Last Recorded in 2023.

Latest 5 Records
Date#VC10k Area
13/09/2023162SE98 - Wykeham
07/09/2023263SE60 - Hatfield
07/09/2023162SE98 - Wykeham
04/09/2023161TA17 - Bempton
03/09/2023162TA08 - Scarborough
Further info: Pheosia gnoma
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