Incurvaria koerneriella (Zeller, 1839)
Fagus sylvatica, Plasmolen, Sint Jansberg © Maarten Immerzeel
The larvae start by making small, roundish blotch mines, often a considerable number in a single leaf. After some time they make a circular excision, not much smaller than the mine itself (3-4 mm in diameter). Thus sandwiched they drop to the ground, and there continue feeding on dead leaf material; all the while enlarging their case when needed.
Fagaceae, Malvaceae; nauw polyfaag
Beech seems the most important hostplant.
Mining larvae are found in May-June (Hering, 1957a).
BE recorded. (Phegea, 2011).
NE waargenomen (Kuchlein & de Vos, 1999a; Microlepidoptera.nl, 2010).
LUX not recorded (Fauna Europaea, 2011).
distribution within Europe
From Sweden tot Spain and Italy, and from France to Romania (Fauna Europaea, 2011).
Described by Patočka & Turčáni (2005a).
Bengtsson (2008a), Buhr (1935b), Hellers (2016a), Hering (1934a, 1935a, 1957a), Jensen (1932a), Patočka & Turčáni (2005a), Sønderup (1949a), Szőcs (1977a), Tomov & Dimitrov (2007a).