Plant Parasites of Europe

leafminers, galls and fungi

Phyllonorycter geniculella

Phyllonorycter geniculella (Ragonot, 1874)

sycamore midget

Phyllonorycter geniculella: mine on Acer pseudoplatanus

Acer pseudoplatanus, Flevoland, Reve-Abbertbos © Hans Jonkman: mine on the lamina

Phyllonorycter geniculella: mine on Acer pseudoplatanus

same mine, underside (with drops of water inside)

Phyllonorycter geniculella: mine on Acer pseudoplatanus

mine along the leaf margin

Phyllonorycter geniculella: mine on Acer pseudoplatanus

same mine, underside

Phyllonorycter geniculella mine

Acer pseudoplatanus, Amsterdam; lighted from behind

Acer pseudoplatanus, Nieuw-Bergen; opened mine

Acer pseudoplatanus, Castricum; very young mine with, right picture, the iridescent egg shell at the start


The mine begins as an inconspicuous lower surface epidermal corridor, beginning at an iridescent egg shell. This corridor is followed, and mostly replaced, by a relatively small, lower-surface, tentiform mine with many weak folds. When the mine happens to lie close to the leaf margin the leaf may fold downwards over the mine. Pupa in the mine, dark brownish black, in a loosely spun cocoon. Frass heaped in a corner of the mine.


Sapindaceae, narrowly monophagous

Acer pseudoplatanus.

Buhr (1935a) additionally mentions Acer saccharinum.


Larvae in May – July, and September – October.


BE recorded (Phegea, 2009).

NE recorded (Kuchlein & de Vos, 1999a;, 2009).

LUX recorded (Ellis: Kautenbach).

distribution within Europe

From Sweden to the Pyrenees, Italy, and Bulgaria, and from Britain to South Russia (Fauna Europaea, 2009).




Lithocolletis geniculella; L. dahmiella (Sorhagen, 1900); Lithocolletis, Phyllonorycter acernella: auct.


Ahr (1966a), Bengtsson & Johansson (2011a), Buhr (1935a, 1964a), Buszko (1992b), Csóka (2003a), Deschka & Wimmer (2000a), Deutsch (2012a), Deutschmann (2008a), Emmet, Watkinson & Wilson (1985a), van Frankenhuyzen & Houtman (1972a), van Frankenhuyzen, Houtman & Kabos (1982a), Gregor & Patočka (2001a), Gregor & Povolný (1950a), Haase (1942a), Hering (1931a, 1934b, 1957a, 1961a), Huemer (1986b), Huemer & Erlebach (2003a), Jaworski (2009a), Kasy (1983a, 1987a), Kollár (2007a), Kuchlein & Donner (1993a), Kuchlein & de Vos (1999a), Maček (1999a), Matošević, Pernek, Dubravac & Barić (2009a), Nel & Varenne (2014a), Nowakowski (1954a), Patočka & Turčáni (2005a), Plóciennik, Pawlikiewicz & Jaworski (2011a), Robbins (1991a), Sefrová (2005a), Skala (1941a), Sønderup (1949a), Starý (1930a), Szőcs (1977a, 1978a, 1981a), Tomov & Krusteva (2007a), Wieser (2005a).

Last modified 18.i.2020