Noctuidae : Noctuinae
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Photo © Neil Bowman,  Eccles 11/07/18 - New for Norfolk (confirmed J. Clifton)

Similar Norfolk Species
Lesser Broad-bordered Yellow Underwing
Noctua janthe
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Langmaid's Yellow Underwing
Noctua janthina

[Denis & Schiffermüller], 1775 2110a / 73.347

Norfolk status
Rare Immigrant.

This species and Lesser Broad-bordered Yellow Underwing, Noctua janthe were only separated as different species in 1991. First recorded in Britain by John Langmaid at Southsea, Hampshire, on 9 July 2001.

Specimens of N. janthina (Lanmaid’s) must meet all the critical points (size, shape and tone, underside of forewing and upperside of hindwing)

Hindwing - The black outer border of the hindwing is generally broad, and extends along the costa without a gap, giving the overall effect of a black hindwing with a yellow spot.

Forewing - The underside of the forewing should also be examined, janthe (Lesser Broad-bordered) showing a toothed outer edge to the black area that ends well before the outer edge of the wing. The outer edge of the black area in janthina (Langmaid’s) is usually smooth ending closer to the outer edge of the wing.

Please see comparative images here mothdissection.co.uk

Confirmation requires all critical features to be met and photographed, and if not 100% certain, dissection of the genitalia.

New for Norfolk in 2018, when a male, the first of two moths, were trapped at Eccles-on-Sea (11/07/18, Neil Bowman, Gen. Det. Jon Clifton)

Verification Grade Comment: Specimens must be retained / photographed showing hindwing and underside of forewing for confirmation.

Determination by Genitalia Examination (gen. det.) Required

Recorded in 4 (5%) of 74 10k Squares.
First Recorded in 2018.
Last Recorded in 2024.
Additional Stats

< Least Yellow Underwing | Lesser Broad-bordered Yellow Underwing >

Determination
Comparison - Underside and Hindwing - Neil Bowman
List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10kGeneral Area
08/08/2024127TG42Eccles
07/08/2024127TG42Eccles
03/08/2024127TG30Brundall / Blofield
09/07/2024127TG42Eccles
13/08/2023127TG20Stoke Holy Cross
Show Details | 1990 to 2023 | 2000 to 2023 | Graph Key
Express Record Langmaid's Yellow Underwing
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Forewing: 16-18mm
Flight: July - August
Foodplant:   Various herbaceous plants
Red List: Least Concern (LC)
GB Status: Not Assessed / Immigrant
Former Status: Rare Immigrant
Verification Grade:  Adult: 4
 Immature Adult   [Show Flight Times]

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Underlying maps using Digital Map Data © NOLA™ 2024. © Lepidoptera UK - Jim Wheeler - Norfolk Moths 2007 - 2024. Data © NOLA™ 2024
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