Plant Parasites of Europe

leafminers, galls and fungi

Orchestes quercus

Orchestes quercus (Linnaeus, 1758)

Orchestes quercus mine

Quercus robur, Castricum


Quercus robur, Aalten


Quercus robur, Duin en Kruidberg


Quercus robur, Hollandsche Rading: oviposition scar, and beginning of the corridor within the midrib


Oviposition in the underside of the midrib or, more rarely, a thick lateral vein. Here a conspicuous scar remains. Form this point a corridor starts, first within the midrib, later running freely in the leaf into the direction of the leaf tip, gradually widening. In the end a large blotch is formed. Frass in thread fragments, pasted to the upper epidermis. The mature larva, within the mine, extrudes a liquid that hardens and forms a globular cocoon in which the pupation takes place.

Old mines mostly completely wither away, but their former presence remains recognisable in the cleft leaf tip, in combination with the old oviposition scar.

host plants

Fagaceae, broadly monophagous

Quercus cerris, frainetto, “lanuginosa”, petraea, pubescens, robur, rubra

Also on all sorts of introduced Oak species (Welch, 1994a).


Larvae in May-June (Hering, 1957a). Adults emerge in late June (Rheinheimer & Hassler, 2010a).


BE recorded (, 2010).

NE recorded (Heijerman, 1993a).

LUX recorded (Ellis, Clervaux).

distribution within Europe

From Ireland, the UK, France and Italy to Central Europe; not in Scandinavia, the Iberian and Balkan Peninsulas (Fauna Europaea, 2007).



Scherf (1964a).


Rhynchaenus quercus.

parasitoids, predators

? Pnigalio agraules; Tetrastichus miser.


Beiger (1979a), Buhr (1933a, 1964a), Caillol (1954a), Compte (1981a), Csóka (2003a), Delbol (2013a), Dieckmann & Herger (1985a), Drăghia (1971a), Forbicioni, Abbazzi, Bellò ao (2019a), van Frankenhuyzen & Houtman (1972a), van Frankenhuyzen Houtman & Kabos (1982a), Haase (1942a), Heijerman (1993a), Hering (1924a,b, 1930a, 1934a, 1957a), Kleine (1924a), Kollár & Hrubík (2009a), Maček (1999a), Matošević, Pernek, Dubravac & Barić (2009a), Michalska (1972a, 1976a), Michna (1975a), le Monnier (2003a), Podlussány (2007a), Rheinheimer & Hassler (2010a), Robbins (1991a), Skala (1951a), Skala & Zavřel (1945a), Sønderup (1949a), Stammer (2016a), Tomov & Dimitrov (2007a), Trägårdh (1910a), Ureche (2010a), Welch (1994a), Vorst (2010a), van Wielink (2020a), Yunakov, Nazarenko, Filimonov & Volovnik (2018a), Zoerner (1969a).

Last modified 13.xi.2023