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Swammerdamia caesiella
Birch Ermine (Hübner, 1796)
Yponomeutidae: Yponomeutinae
437 / 16.015
Photo © Mark Cocker,  05/07/2014 - Hollies, Claxton

Similar Norfolk Species
Little Ermine
Swammerdamia pyrella
White-headed Ermine
Paraswammerdamia albicapitella
Wingspan: 9-13mm
Flight: Two Generations. May-Jun. Jul-Sep.
Foodplant:   Birch
Nat Status: Common
Verification Grade:  Adult: 2
Norfolk Status
Probably the most common member of the group, found throughout the British Isles. Heathland and open woodland.

See also Paraswammerdamia nebulella, both are grey with a white head.

Verification Grade Comment: Poorly marked / worn examples Grade 4

Recorded in 45 (65%) of 69 10k Squares.
First Recorded in 1874.
Last Recorded in 2020.

Latest 5 Records
Date#VC10k Area
05/07/2020127TG10 - Wymondham/Cringleford
04/07/2020+27TG13 - Baconsthorpe
04/07/2020127TG10 - Wymondham/Cringleford
30/06/2020127TG20 - Norwich
26/06/2020227TG21 - N.Norwich/Spixworth
Further info: Swammerdamia caesiella
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