37.071 Coleophora glaucicolella (Grey Rush Case-bearer)
ws: 10-12mm; Jun-Aug; rush (Juncus spp); common in damp areas throughout Britain
Coleophora glaucicolella §1 male
ID: Forewing with longitudinal white/pale streaks; antenna without extensive dense scales at base; forewing pale streaks obscure so that only the costa is distinct > C.atriplicis/alticolella/glaucicolella. Antenna ringed to middle, spotted below in apical half > C.glaucicolella. C.atriplicis is larger (ws12-14mm) and has the antenna ringed to the apex; C.alticolella has the antenna barred to 3/4. Genital dissection recommended for confident ID.
Male Genitalia: Sacculus without a distinct anterior process, with a distinct long, narrow posterior process arising from its postero-lateral corner and continuous with the lateral border of the sacculus; aedeagus with an apical tooth on each prong and two clusters of cornuti in vesica.
Female Genitalia: Ductus bursae with a spiculate section close to the subgenital plate extending for about 2x length of SGP; long incision in posterior margin of SGP, continuous with ostium and almost reaching anterior margin of SGP; SGP parallel-sided.
Male Genitalia: Sacculus without a distinct anterior process, with a distinct long, narrow posterior process arising from its postero-lateral corner and continuous with the lateral border of the sacculus; aedeagus with an apical tooth on each prong and two clusters of cornuti in vesica.
Female Genitalia: Ductus bursae with a spiculate section close to the subgenital plate extending for about 2x length of SGP; long incision in posterior margin of SGP, continuous with ostium and almost reaching anterior margin of SGP; SGP parallel-sided.
Dissection
Male genitalia
Female genitalia
§1 Surlingham, Norfolk; 24/07/2009; male; fw 5.0mm
§2 Strumpshaw Fen, Norfolk; 28/07/2009; male; fw 5.9mm
§3 Strumpshaw Fen, Norfolk; 28/07/2009; female; fw 5.1mm
§4 Westcliff-on-sea, Essex; 23/074/2013; male; fw 6.1mm
§5 Strumpshaw Fen, Norfolk; 05/07/2013; male; fw 6.1mm
§6 Windermere, Cumbria; 16/07/2015; female; fw 5.6mm; to light
All images © Chris Lewis
§2 Strumpshaw Fen, Norfolk; 28/07/2009; male; fw 5.9mm
§3 Strumpshaw Fen, Norfolk; 28/07/2009; female; fw 5.1mm
§4 Westcliff-on-sea, Essex; 23/074/2013; male; fw 6.1mm
§5 Strumpshaw Fen, Norfolk; 05/07/2013; male; fw 6.1mm
§6 Windermere, Cumbria; 16/07/2015; female; fw 5.6mm; to light
All images © Chris Lewis
Page published March 2011 | §2&3 added and text revised 01/11/2012 | §4 added 28/08/2013 | §5 added 01/04/2014 | §6 added 06/03/2016
