Tortricidae : Olethreutinae
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Photo © Dave Jones,  11/07/2018 - Stoke Holy Cross

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Immature stages

Similar Norfolk Species
Eucosma cana
Hoary Tortrix
Eucosma obumbratana
Shaded Tortrix
Eucosma fulvana
Tawny Knapweed Tortrix
Approx Length (c. 11mm) Wingspan (15-22mm)
      
      
      
      
    
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Eucosma hohenwartiana
Common Knapweed Tortrix

([Denis & Schiffermüller], 1775)1200 / 49.266
=Bright Bell

Norfolk status
Common.
Dry, open and grassy areas.

Large specimens may be confused with E. cana but can be distinguished by the darker ground colour.

Found in rough grassland, especially on the coast and on chalk downs, waysides, embankments and margins of woods.

Pale specimens, especially ​if found in proximity to the larval foodplant Greater Knapweed, should be considered as candidates for Eucosma fulvana (see species)

Recorded in 53 (72%) of 74 10k Squares.
First Recorded in 1834.
Last Recorded in 2023.
Additional Stats

Eucosma cana  |  Eucosma fulvana >

Determination
List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10kGeneral Area
17/09/2023128TF63Snettisham
05/09/2023128TF74Titchwell
24/08/2023127TG04Cley next the Sea
22/08/2023127TG04Cley next the Sea
21/08/2023127TG04Cley next the Sea
Show Details | 1990 to 2023 | 2000 to 2023 | Graph Key
Express Record Eucosma hohenwartiana
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Wingspan: 15-22mm
Flight: June to August. (Sept)
Foodplant:   Common Knapweed
Nat Status: Common
Verification Grade:  Adult: 2
 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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