Tortricidae : Olethreutinae
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Photo © Dave Jones,  26/08/2013 - Stoke Holy Cross

Similar Norfolk Species
Bactra furfurana
Mottled Marble
Approx Length (c. 10mm) Wingspan (11-20 mm.)
      
      
      
      
    
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Bactra lancealana
Rush Marble

(Hübner, 1799)49.194/1111
Norfolk status
Widespread.
Easily confused with other Bactra species.
Distinguished from B. furfurana by the crescent-shaped discocellular mark and the absence of a basal patch on the forewing. Unicolorous specimens can only be separated by examination of the genitalia.

Please note: Bactra lacteana
Discovered in Britain 1996. Specimens of Bactra lancealana showing two short blackish sub-apical streaks should be checked by reference to the genitalic structure.

Recorded in 53 (77%) of 69 10k Squares.
First Recorded in 1874.
Last Recorded in 2018.
Additional Stats

Endothenia quadrimaculana  |  Bactra furfurana >

Determination
Bactra lancealana showing crescent-shaped discocellular mark
List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10k Area
20/09/2018127TG10 - Wymondham/Cringleford
17/09/2018128TF92 - Fakenham/Ryburgh
11/09/2018127TG33 - Bacton
05/09/2018128TF63 - Snettisham/Dersingham
03/09/2018127TG23 - N.Walsham/Roughton
Show Details | 1990 to 2018 | 2000 to 2018 |
Express Record Bactra lancealana
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Copyright © Jim Wheeler 2019

Wingspan: 11-20 mm.
Season: Two Generations. Jun - Oct.
Foodplant:   Various rushes.
Nat Status: Common
Verification Grade:  Adult: 2
 Immature Adult
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Underlying maps using Digital Map Data © Norfolk Online Lepidoptera Archive - NOLA™ 2019. © James Wheeler - Norfolk Moths 2007 - 2019. Data © NOLA™ 2019