Pyralidae : Phycitinae
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Photo © Greg Bond,  In garden MV trap 22 July 2013

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Oncocera semirubella
Rosy-striped Knot-horn

(Scopoli, 1763)1441 / 62.021
=Rhubarb & Custard
Norfolk status
Flies in afternoon sunshine, later coming to light.
Popularly named the Rhubarb and Custard moth.

Resident on chalk downland and limestone cliffs, in the southernmost counties of England.

Increasing Norfolk records including Eccles in 2005 (N. Bowman, 29/07/05), Stoke Holy Cross in 2006 (A. Musgrove (21/07/06) and Overstrand in 2013 (G. Bond, 22/07/13).
New for VC28 in 2014 at Abbey Farm, Flitcham (R. Jones, J. Swalwell, 12/07/14) also Hockwold in 2014 (K. Puttick)

Records in more recent years from the Brecks suggest maybe a breeding population? Norfolk coastal records are of assumed migrants.

Recorded in 29 (39%) of 74 10k Squares.
First Recorded in 1900.
Last Recorded in 2021.
Additional Stats

Etiella zinckenella  |  Pempelia genistella >

List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10k Area
25/09/2021128TF93 - Fakenham/Walsingham
09/09/2021127TG32 - Stalham/Catfield
10/08/2021227TG24 - Cromer
26/07/2021128TF74 - Holme/Titchwell
26/07/2021128TF74 - Holme/Titchwell
Show Details | 1990 to 2021 | 2000 to 2021 | Graph Key
Express Record Oncocera semirubella
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Wingspan: 17-29 mm.
Flight: June and July
Foodplant:   Bird's-foot trefoil and Clover.
Nat Status: Nationally Scarce B
Verification Grade:  Adult: 1
 Immature Adult

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Underlying maps using Digital Map Data © NOLA™ 2022. © Lepidoptera UK - Jim Wheeler - Norfolk Moths 2007 - 2022. Data © NOLA™ 2022
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