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Yponomeuta rorrella
Willow Ermine (Hübner, 1796)
Yponomeutidae: Yponomeutinae
428 / 16.005
Photo © Dave Leech,  Cranwich pits 16/07/13

Similar Norfolk Species
Bird-cherry Ermine
Yponomeuta evonymella
Orchard Ermine
Yponomeuta padella
Wingspan: 19-24mm
Flight: July - Aug
Foodplant:   White Willow, Grey Willow.
Nat Status: Local
Verification Grade:  Adult: 2
Norfolk Status
Occasional migrant.
Found in habitats where food plant found.

Can be very difficult to separate adults from other Yponomeuta species. A grey suffusion, restricted to the outer half of the forewing, generally diagnostic.

Verification Grade Comment: Occupied larval web or bred if uncertain

Recorded in 43 (62%) of 69 10k Squares.
First Recorded in 1874.
Last Recorded in 2020.

Latest 5 Records
Date#VC10k Area
20/08/2020127TG32 - Stalham/Catfield
12/08/2020127TG10 - Wymondham/Cringleford
10/08/2020228TF63 - Snettisham/Dersingham
10/08/2020128TF73 - Docking/Bircham
10/08/2020227TG01 - Lyng/N.Tuddenham
Further info: Yponomeuta rorrella
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