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White-spotted Pinion
Cosmia diffinis (Linnaeus, 1767)
Noctuidae: Xyleninae
2317 / 73.214
Photo © Bill Urwin

Similar Norfolk 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.
Nat Status: Red Data Book (proposed)
Verification Grade:  Adult: 3
Norfolk Status
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 Duch Elm Disease in the 1970's onwards.

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

Recent 2017/18 records from the Brecks.

Record confirmation required.

BAP Priority Species

Verification Grade Comment: Very rare.

Retained Specimen / Photograph will be Required.

Recorded in 15 (22%) of 69 10k Squares.
First Recorded in 1800.
Last Recorded in 2019.

Latest 5 Records
Date#VC10k Area
23/08/2019128TF84 - Burnham/Holkham
17/08/2019128TF62 - King's Lynn/Dersingham
31/07/2018128TF80 - Swaffham
26/07/2017128TL79 - Methwold/Foulden
30/07/1986+28TF70 - Beachamwell/Oxborough
Further info: Cosmia diffinis
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