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Dark Crimson Underwing
Catocala sponsa (Linnaeus, 1767)
Erebidae: Erebinae
2455 / 72.081
Photo © Gary White,  31/07/2020 - Earlham Cemetery

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Similar Species
Light Crimson Underwing
Catocala promissa
Red Underwing
Catocala nupta
Forewing: 29-34mm
Flight: July - September
Foodplant:   Pedunculate Oak, Sessile Oak
Red List: Near Threatened (NT)
GB Status: Nationally Rare / Immigrant
Former Status: Red Data Book / Immigrant
Verification Grade:  Adult: 3
Rare migrant, recent resident.

Unconfirmed old Norfolk records from Foxley Wood 1967 and two questionable BRC record card entries!

First modern-day confirmed Norfolk record at Toftwood in 2018 (D. Norgate, 26/07/18) Found on shed by the 20W Actnic trap left in garden overnight.

Formerly listed as a Red Data Book category RDB3 species, occurring as a breeding species only in the New Forest, Hampshire.

Several Norfolk records in recent years, with multiple records from the same sites indicating the species is now breeding in Norfolk.

Similar to the rare Light Crimson Underwing. DCU is usually larger and brown in general colouration, LCU is smaller and greyer. The hindwing upperside is the most reliable feature to separate. DCU black cross-bar deeply waved. LCU black cross-bar much straighter with shallow waves. See field guides for more info.

BAP Priority Species

Retained Specimen / Photograph will be Required.

Recorded in 24 (32%) of 74 10k Squares.
First Recorded in 1961.
Last Recorded in 2023.
Additional Stats

Latest 10 Records
08/09/2023127TG20Norwich (Eaton)
02/09/2023128TF93Little Snoring / Thursford
26/08/2023127TG14Sheringham / Beeston
22/08/2023127TG32Honing / Crostwight Common
22/08/2023127TG32Neatishead / Barton Broad
20/08/2023127TG14Sheringham / Beeston
19/08/2023127TG04Cley next the Sea
16/08/2023127TG21Norwich (Thorpe End)
Further info: Catocala sponsa
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