Pyralidae : Phycitinae
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Photo © Jim Swalwell,  East Walton Common, 19/8/11

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Similar Norfolk Species
Dioryctria abietella
Dark Pine Knot-horn
Dioryctria schuetzeella
Spruce Knot-horn
Dioryctria simplicella
Brown Pine Knot-horn
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Dioryctria sylvestrella
New Pine Knot-horn
(Ratzeburg, 1840)1454b / 62.025
Norfolk status
Largest of the four Dioryctria.
Conifer plantations and heathland.

Smoother sub-terminal line on the forewing in D. sylvestrella than with D. abietella.
In addition, the sub-terminal line approaches the dorsum almost at a right-angle in D. sylvestrella.

Recorded in 39 (53%) of 74 10k Squares.
First Recorded in 2004.
Last Recorded in 2021.
Additional Stats

< Rhodophaea formosa  |  Dioryctria schuetzeella >

Determination
Subterminal fascia much straighter when compared to D. abietella, not showing strong zigzags
List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10k Area
20/08/2021127TG30 - Brundall/Cantley
14/08/2021127TG13 - Baconsthorpe
14/08/2021128TL99 - Thompson/Gt.Hockham
14/08/2021128TL99 - Thompson/Gt.Hockham
14/08/2021128TL79 - Methwold/Foulden
 Show Details | 1990 to 2021 | 2000 to 2021 | Graph Key
Express Record Dioryctria sylvestrella
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Wingspan: 28-35mm
Flight: June - Sept
Foodplant:   Pine
Nat Status: Nationally Scarce B
Verification Grade:  Adult: 2
 Immature Adult
Further info: Dioryctria sylvestrella
 
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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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