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Ocnerostoma piniariella
White Pine Ermine (Zeller, 1847)
Yponomeutidae: Yponomeutinae
444 / 16.023
Photo © Rob Edmunds

Similar Norfolk Species
Grey Pine Ermine
Ocnerostoma friesei
Wingspan: 8-10mm
Flight: June - July
Foodplant:   Scots Pine
Nat Status: Nationally Scarce B
Verification Grade:  Adult: 4
Norfolk Status
Rare, uncertain.
Conifer plantations.

Distribution is incompletely known due to confusion with the very similar O. friesei.

There is very little to separate this species from Ocnerostoma friesei. Attention should be paid to the antenna, which is ringed white and pale grey in the male and white in the female.

[MBGBI vol3, p65]

Determination by Genitalia Examination (gen. det.) Required

Recorded in 8 (12%) of 69 10k Squares.
First Recorded in 1874.
Last Recorded in 2020.

Latest 5 Records
Date#VC10k Area
30/06/2020128TF63 - Snettisham/Dersingham
29/06/2019128TF63 - Snettisham/Dersingham
20/06/2018128TL79 - Methwold/Foulden
01/04/2017+28TL79 - Methwold/Foulden
19/07/2014128TF62 - King's Lynn/Dersingham
Further info: Ocnerostoma piniariella
 
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