Phyllonorycter apparella (Herrich-Schäffer, 1855)
Populus tremula, Belgium, prov. Hainaut, Hensies; © Jean-Yves Baugnée
underside: unfortunately, the mine was vacated
Lower-surface tentiform mine with 1-2 strong folds. Frass clumped in a corner of the mine. Pupa in the mine, in a large white cocoon.
Populus x canescens, tremula.
Delplanque (1998a), Kollár (2007a), and Kollár & Hrubík (2009a) additionally mention P. alba, nigra, and simonii.
Larvae in June, then again in August – October (Hering, 1957a).
BE recorded (Phegea, 2010).
NE The record for the Netherlands by Kuchlein & Kuchlein-Nijsten (2002b) has been retracted (2003a).
LUX not recorded (Fauna Europaea, 2010).
distribution within Europe
Missing from the Iberian and Balkan Peninsula, and the Mediterranean Islands (Fauna Europaea, 2010). Missing also from the British Isles, but a vagrant has been found in Scotland (Riddiford & Young).
Gregor & Patočka (2001a) give a detailed description. The pupa is blackish brown. The cremaster is rounded, broader than long. Of the usual two pairs of spines the outer is almost, the inner one seemingly entirely, absent. See also Patočka & Turčáni (2005a).
Arru (1996a), Bengtsson & Johansson (2011a), Buszko (1987a, 1992b), Davis & Deschka (2001a), Delplanque (1998a), Gregor & Patočka (2001a), Hering (1957a), Kollár (2007a), Kollár & Hrubík (2009a), Kuchlein & Kuchlein-Nijsten (2002b, 20903), Nel & Varenne (2014a), Patočka & Turčáni (2005a), De Prins (1998a), De Prins & Steeman (2014a), Riddiford & Young (2016a), Schütze (1931a), Szőcs (1977a, 1981a), Yefremova & Kravchenko (2015a).