Etainia sericopeza (Zeller, 1839)
norway-maple pigmy

Acer platanoides, Belgium, Liège, Coteaux de la Citadelle © Jean-Yves Baugnée

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The egg of the first generation is deposited on the wing of a key (sometimes, however, directly on the seed). The larva makes a short, superficial corridor (sometimes only the egg is visible), leading towards the seed, that finally is eaten out. Infested samaras are prematurely shed, and should be sought on the ground. (The larva of the second generation makes a short mine in the bark of a petiole, and from there penetrates a bud that is consumed from the inside out.)
host plants
Sapindaceae, narrowly monophagous
Acer platanoides.
phenology
Larvae of the mining generation from late May till mid-August; the second larva generation lives from September till May of the following year (Homan & Smart, 2011a).
BENELUX
BE recorded (Phegea, 2009).
NE recorded (Kuchlein & de Vos, 1999a; Microlepidoptera.nl, 2009).
LUX not recorded (Fauna Europaea, 2009).
distribution within Europe
From Scandinavia and Finland to the Pyrenees, Italy, and Greece, and from Britain to Russia and the Ukraine (Fauna Europaea, 2009).
larva
Head and pale yellow (Emmet, 1983a; Gustafsson & van Nieukerken, 19990a).
synonyms
Ectoedemia, Stigmella, sericopeza.
references
Ahr (1966a), Alders (2004a), Bengtsson (2008a), Borkowski (1969a), J Černý (2001a), Diškus & Stonis (2012a), Emmet (1983a), Gustafsson (1985a), Gustafsson & van Nieukerken (1990a), Haase (1942a), Hering (1934b, 1957a), Homan & Smart (2011a), Huisman, Koster, van Nieukerken & Ulenberg (2004a), Jäckh (1951a), Johansson ao (1990a), Kuchlein & Donner (1993a), Kuchein & de Vos (1999a), ME & MA Kurz (2007a), Laštuvka & Laštuvka (1997a), Navickaitė, Diškus & Stonis (2011a, 2014a), van Nieukerken (1986a), van Nieukerken, A & Z Laštuvka (2006a), van Nieukerken, Zolotuhin & Mistchenko (2004a), Pinzari, Pinzari & Zilli (2013a), De Prins, Steeman & Sierens (2016a), Sefrová (2005a), Skala (1939a), Sønderup (1949a), Stonis, Navickaitė, Rocienė ao (2013a), Szőcs (1977a, 1081a), Yefremova & Kravchenko (2015a), Zaberga, Legzdina, Otfinowski & Obelevičius (2014a).