074 Coleophora taeniipennella

COLEOPHORIDAE

37.074 Coleophora taeniipennella (Small Rush Case-bearer)

ws: 9-12mm; Jun-Jul; jointed/sharp-flowered rush (Juncus articulatus/acutiflorus); common in fens, marshes and damp meadows throughout GB

Coleophora taeniipennella §1 female

ID: Forewing with distinct pale longitudinal streaks, with oblique streaks on or between veins extending to costa, without scattered fuscous scales > 25 species which require genital dissection to distinguish.
Male genitalia: sacculus with a distinct anterior process; posterior process distinctly shorter than anterior process.
Female genitalia: ductus bursae without a spiculate or sclerotised section; length of subgenital plate approximately equal to its breadth; introitus vaginae sclerotised laterally to give 2 lines of sclerotisation from the ostium; posterior margin of ostium with symmetrical 'nodes'

Variation
Dissection
Male genitalia
Female genitalia

§1 Strumpshaw Fen, Norfolk; 28/07/2012; female; fw 5.1mm
§2 New Forest, Hampshire; 03/06/2012; male; fw 5.4mm
§3 Strumpshaw Fen, Norfolk; 10/07/2015; female; fw 4.8mm; to light
§4 Strumpshaw Fen, Norfolk; 10/07/2015; male; fw 5.4mm; to light
§5 Strumpshaw Fen, Norfolk; 10/07/2015; female; fw 5.3mm; to light
§6 Foulden Common, Norfolk; 14/08/2016; female; fw 4.2mm
§7 Foulden Common, Norfolk; 29/06/2017; female; fw 5.1mm
§8 Dungeness, Kent; 12/07/2018; male; fw 4.8mm
§9 New Forest, Hampshire; 14/07/2019; male; fw 5.0mm
All images © Chris Lewis