Pyralidae : Phycitinae
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Photo © Jo Carey,  02/08/2024 - Norwich

Similar Norfolk Species
Acrobasis repandana
Beautiful Oak Knot-horn
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Acrobasis tumidana
Tufted Oak Knot-horn

(Denis & Schiffermüller, 1775)1435 / 62.033
=Scarce Oak Knot-horn
=Conobathra tumidana

Norfolk status
Scarce.

Immigrant from mainland Europe to southern England, with recent records in Suffolk.

The adult resembles Acrobasis repandana but shows a characteristic ridge of reddish raised scales next to a white crossbar.

Recorded in Bradwell, Norfolk (VC25 East Suffolk) in 2020 (K. Knights, 14/08/2020) and old Suffolk records from Fritton Lake, Norfolk (VC25) in 1934.

New for Norfolk in 2022 at Neatishead VC27 (J. Kelf, 10/07/22) and VC28 at Great Ellingham in 2023 (C. Knott, 13/08/23)

Retained Specimen / Photograph will be Required.

Recorded in 6 (8%) of 74 10k Squares.
First Recorded in 2022.
Last Recorded in 2024.
Additional Stats

Nephopterix angustella | Acrobasis repandana >

Determination
List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10kGeneral Area
14/08/2024127TM49Thurlton
13/08/2024127TG30Blofield / Lingwood
07/08/2024227TG42Eccles
02/08/2024127TG21Norwich (Catton)
23/08/2023127TG30Blofield / Lingwood
Show Details | 1990 to 2023 | 2000 to 2023 | Graph Key
Express Record Acrobasis tumidana
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Wingspan: 19-24mm
Flight: One generation, July to August
Foodplant:   Oak
Nat Status: Migrant
Verification Grade:  Adult: 3
 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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