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Coleophora milvipennis
Birch Case-bearer (Zeller, 1839)
Coleophoridae
496 / 37.009
Photo © Peter Buchner - Lepiforum

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Similar Species
Elm Case-bearer
Coleophora limosipennella
Wingspan: 10-13mm
Flight: July
Foodplant:   Birch, Hornbeam.
Nat Status: Local
Verification Grade:  Adult: 4  Case: C1
Status
Heathland and open woodland where scattered birch trees found.

Like many of the Coleophora, adults are virtually impossible to identify without recourse to dissection.

Leaf-mine: August to September, with some larvae developing more slowly, and feeding again in April and May.
The final case is fixed at right angles to leaf surface, with a serrated keel.

[MBGBI vol3 p219]

Determination by Genitalia Examination Required

Recorded in 20 (27%) of 74 10k Squares.
First Recorded in 1991.
Last Recorded in 2023.

Latest 10 Records
Date#VC10kArea
28/09/2023428TF91Gressenhall
27/09/2023+27TG12Buxton Heath
21/06/2023127TG13Hempstead
08/10/2022128TF83Syderstone
23/08/2022127TG12Buxton Heath
30/10/2021128TF62Sandringham
16/09/2021127TG14Kelling Heath
14/07/2021128TF62Dersingham Bog
08/07/2021127TG41Winterton
16/06/2021127TG32Irstead / Catfield
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