Yponomeutidae : Yponomeutinae
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Photo © Patrick Clement,  Lava, under a silk web, grazing a birch leaf, Comer Wood Shropshire, 15th September 2021.

Immature stages

Similar West Midlands Species
Swammerdamia pyrella
Little Ermine
Paraswammerdamia albicapitella
White-headed Ermine
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Swammerdamia caesiella
Birch Ermine

(Hübner, 1796)437 / 16.015

Fairly common resident.

Betula spp. with larva feeding in July and September under a web on the upper side of a leaf.

Verification Grade Comment: Poorly marked / worn examples Grade 4

Determination by Genitalia Examination (gen. det.) Required

Recorded in 55 (39%) of 140 10k Squares.
First Recorded in 1874.
Last Recorded in 2020.
(Data up to end 2020)
Additional Stats

Wingspan: 9-13mm
Flight: Two generations. May/June and July to September.
Foodplant:   Birch
Nat Status: Common
Verification Grade:  Adult: 4
Pseudoswammerdamia combinella  |  Swammerdamia pyrella >
List Species Records   [Show All Latest]
Latest 5 Records (data up to end 2020)
Date#VC10k Area
12/08/20201VC39 - StaffordshireSJ91
08/08/20201VC37 - WorcestershireSO98
05/07/20201VC39 - StaffordshireSJ95
25/06/20201VC40 - ShropshireSO49
23/06/20201VC37 - WorcestershireSP06
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