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White-spotted Pinion
Cosmia diffinis (Linnaeus, 1767)
Noctuidae: Xyleninae
2317 / 73.214
Photo © Chris McGaw,  31/07/2018 - Great Cressingham

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Similar Species
Lesser-spotted Pinion
Cosmia affinis
Lunar-spotted Pinion
Cosmia pyralina
Forewing: 14-16mm.
Flight: One gen. late July- late Aug.
Foodplant:   English Elm, Wych Elm, Small-leaved Elm.
Red List: Least Concern (LC)
GB Status: Nationally Scarce
Former Status: Red Data Book (proposed)
Verification Grade:  Adult: 3
Status
Scarce.
One of three rather similar British species.
Much larger pure-white markings on leading edge of forewing than other two similar 'pinions'.
Elm feeder, suffered greatly by outbreaks of Dutch Elm Disease in the 1970s onwards.

Look for larvae in epicormic growth (shoots growing directly from trunk)

Very few recent records.

S41 - BAP Priority Species

Retained Specimen / Photograph will be Required.

Recorded in 18 (24%) of 74 10k Squares.
First Recorded in 1800.
Last Recorded in 2023.

Latest 10 Records
Date#VC10kArea
21/08/2023128TL78Weeting Heath (Gravelpit Wood)
11/08/2023128TL78Weeting Heath (Gravelpit Wood)
16/07/2023128TL59Welney NNR
21/08/2021127TM08Banham Moor
23/08/2019128TF84Burnham Deepdale / Scolt Head
17/08/2019128TF62King's Lynn
31/07/2018128TF80Great Cressingham
26/07/2017128TL79Mundford
30/07/1986+28TF70Foulden Common
1984+27TG11Lenwade (Dinosaur Park)
Further info: Cosmia diffinis
 
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