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

mine

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.

hostplants

Fagaceae, broadly monophagous

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

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

phenology

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

BENELUX

BE recorded (Curculionidae.be, 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).

larva

pupa

Scherf (1964a).

synonyms

Rhynchaenus quercus.

references

Beiger (1979a), Buhr (1933a, 1964a), Caillol (1954a), Csóka (2003a), Drăghia (1971a), 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), 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), Zoerner (1969a).