38.039 Elachista maculicerusella (Canary-grass Miner)
ws: 10-12mm; bivoltine May-Jun, Jul-Aug; reed canary-grass (Phalaris arundinacea), common reed (Phragmites australis); in fens & marshes in England, Wales and S.Scotland
Synonym: E.monosemiella (MBGBI3)
Synonym: E.monosemiella (MBGBI3)
Elachista maculicerusella §1 male
ID: Forewing pale with darker markings, with ciliary line. Of the possible remaining species only E.maculicerusella and E.subocellea appear to show any hint of a median fascia. E.maculicerusella has plain unbanded antennae, while those of subocellea are banded.
The markings of E.maculicerusella are very variable and poorly marked specimens may require genital examination to distinguish from E.triatomea.
Male genitalia: Of the 6 species in Group B (forewing pale with darker markings) only E.maculicerusella has the vinculum produced into a distinct process and the width across the uncus lobes broader than the width across the tegumen just below the uncus lobes.
Female genitalia: Of the 6 Group B species only E.maculicerusella has a long sclerotised segment at the posterior end of the ductus bursae.
The markings of E.maculicerusella are very variable and poorly marked specimens may require genital examination to distinguish from E.triatomea.
Male genitalia: Of the 6 species in Group B (forewing pale with darker markings) only E.maculicerusella has the vinculum produced into a distinct process and the width across the uncus lobes broader than the width across the tegumen just below the uncus lobes.
Female genitalia: Of the 6 Group B species only E.maculicerusella has a long sclerotised segment at the posterior end of the ductus bursae.
§1 Surlingham, Norfolk; 24/07/2009; male; fw 4.7mm
§2 Sutton Fen, Norfolk; 13/08/2009; male (removed)
§3 Strumpshaw Fen, Norfolk; 09/09/2011; male; fw 4.7mm
§4 Strumpshaw Fen, Norfolk; 29/05/2012; female
§5 ???
§6 Torver, Cumbria; 13/07/2015; male; fw 4.8mm
§7 Surlingham, Norfolk; 07/07/2018; male; fw 4.5mm
§8 Sutton Fen, Norfolk; 13/06/2022
All images © Chris Lewis
§2 Sutton Fen, Norfolk; 13/08/2009; male (removed)
§3 Strumpshaw Fen, Norfolk; 09/09/2011; male; fw 4.7mm
§4 Strumpshaw Fen, Norfolk; 29/05/2012; female
§5 ???
§6 Torver, Cumbria; 13/07/2015; male; fw 4.8mm
§7 Surlingham, Norfolk; 07/07/2018; male; fw 4.5mm
§8 Sutton Fen, Norfolk; 13/06/2022
All images © Chris Lewis
Page published March 2011 (§1-3) | §4 added and text re female genitalia added 12/06/2012 | §5 male (genitalia) added 29/06/2012 |
§6 added 19/03/2016 | §2 removed 11/10/2018 | §7 added 15/05/2019 | §8 added 09/12/2022
§6 added 19/03/2016 | §2 removed 11/10/2018 | §7 added 15/05/2019 | §8 added 09/12/2022
