Argyresthia glaucinella Zeller, 1839
on Aesculus, Betula, Quercus
The larva makes an extended gallery in the living bark of an old tree. Every few cm a pile of bright orange frass is expelled.
polyphagous on deciduous trees
distribution within Europe
The pupa can be found in a somewhat larger pile of frass, in a white, double-walled cocoon. The inner wall being a rather open mesh, the outer wall finely woven.
Agassiz (1996a), Bengtsson & Johansson (2011a). Bland (1989a), Friese (1969a), Konečná (2013a).