Orchestes avellanae (Donovan, 1797)
Quercus robur, Monster, Bloedbergduin © Jan Scheffers
Quercus robur, Groeningse Berg
Quercus robur, UK; © Rob Edmunds
Quercus robur, Belgium, prov. Namur, Viroinval, Vierves-sur-Viroin, RN Roche Madoux © Stéphane Claerebout
Quercus robur, Vorden: frass pattern
Quercus ilex, France, dépt. Var, Le Pradet, lieu-dit “Lou Pigno” © Stéphane Claerbout
lighted from behind
Rather short corridor along the leaf margin, widening into a circular blotch that usually is free from the margin. The mature larva makes an excision that includes almost all of the blotch, and thus sandwidched drops to the ground for pupation.
Fagaceae, broadly monophagous
Quercus ilex, robur.
Both on deciduous and evergreen oaks. The species has often also been associated with Corylus avellana (e.g. by Morris [1993a]), but probably this is not correct (Thompson, 1994a).
Larvae in April-May (Scherf, 1964a). Adults emerge in late summer (Rheinheimer & Hassler, 2010a).
BE recorded (Curculionidae.be, 2010).
NE recorded (Heijerman, 1993a).
LUX not recorded (Fauna Europaea, 2007).
distribution within Europe
Probably distributed over entire Europe, with possible exclusion of Ireland, the Iberian Peninsula and the Balkan Peninsula; however unrecorded in many countries (Fauna Europaea, 2007).
Rhynchaenus avellanae; Orchestes hortorum (Fabricius, 1792); Rhynchaenus, Orchestes signifer (Creutzer, 1799). Although hortorum is the senior name, avellana ia accepted as the valid one by the Fauna Europaea (2010).
Hering’s (1957a) supposition, avellanae/signifer were a synonym of O. subfasciatus as not substantiated. The latter is a species from central and southern Europe (Dieckmann, 1976a).
Rare in the Netherlands (Heijerman, 1993a).
Buhr (1933a), Caillol (1954a), Dieckman (1976a), Heijerman (1993a), Hering (1930a, 1957a), le Monnier (2003a), Morris (1993a), Rheinheimer & Hassler (2010a), Robbins (1991a), Scherf (1964a), Sønderup (1949a), Thompson (1994a), Vorst (2010a).