Coleophora binderella (Kollar, 1832)
grey alder case-bearer
Betula pendula, Belgium, Liège, Villers-le-Bouillet © Jean-Yves Baugnée (autumn)
Alnus glutinosa, Belgium, prov. Namur, Grand-Leez (autumn) © Jean-Yves Baugnée
Alnus incana, Belgium, prov. Namur, Schaltin; © Jean-Yves Baugnée (spring)
mines, with cutouts
Larva in a composite leaf case, composed of large leaf fragments. Characteristically, the leaf fragments are attached in a failry untidy way. In spring the case has two colours, because the old material (dull yellowish, grey or pink) dates from before the hibernation, while new, reddish brown material dates from after the winter. As the pictures show, the case is also enlarged by the addition of ringlets. The case finally is about 7-8 mm long; the mouth angle is 40-45°.
In Britain almost exclusively on Alder (Heal, 1982a; Robbins, 1991a).
The larvae start in October, hibernate in their case, restart feeding in April and reach maturity in end May (Emmet, Langmaid, Bland ao, 1996a).
BE observed (De Prins, 1998a).
NE observed (Kuchlein & de Vos, 1999a); rather rare (Microlepidoptera.nl).
LUX not recorded (Fauna Europaea, 2008).
distribution within Europe
From Scandinavia and Finland to the Iberian Peninsula and Italy, and from Ireland to the Baltic States and Roumania (Fauna Europaea, 2008).
Coleophora bicolorella Stainton, 1861; C. politella Scott, 1861.
Ahr (1966a), Baldizzone (1979a), Baldizzone, Tokár & Kovács (2004a), Biesenbaum & van der Wolf (1999a), Buhr (1935a), Emmet, Langmaid, Bland ao (1996a), Heal (1982a), Heckford (1986a), Hering (1924b, 1925a, 1957a, 1962a), Huisman & Koster (1995a, 2000a), Huisman, Koster, van Nieukerken & Ulenberg (2001a), Klimesch & Skala (1936b), Kuchlein & Donner (1993a), Kuchlein & de Vos (1999a), Kvičala (1938a), van Nieukerken, Gielis, Huisman ao (1993a), Patzak (1974a), De Prins & Steeman (2011a, 2013a), Robbins (1991a), Schütze (1931a), Sefrová (2005a), Suire (1961a), Szőcs (1977a, 1981a), Toll (1952a, 1962a), Zoerner (1969a, 1970a).