Orchestes avellanae (Donovan, 1797)

Orchestes avellanae: mine on Quercus robur

Quercus robur, Monster, Bloedbergduin © Jan Scheffers

Orchestes avellanae: mine on Quercus robur

Quercus robur, Groeningse Berg

Orchestes avellanae: mine on Quercus robur

Quercus robur, UK; © Rob Edmunds

Orchestes avellanae: mine on Quercus robur

Quercus robur, Belgium, prov. Namur, Viroinval, Vierves-sur-Viroin, RN Roche Madoux © Stéphane Claerebout

Orchestes avellanae: mine on Quercus robur, frass pattern

Quercus robur, Vorden: frass pattern

Orchestes avellanae: mine on Quercus ilex

Quercus ilex, France, dépt. Var, Le Pradet, lieu-dit “Lou Pigno” © Stéphane Claerbout

Orchestes avellanae: mine on Quercus ilex

underside

Orchestes avellanae: mine on Quercus ilex

lighted from behind

mine

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.

hostplants

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).

phenology

Larvae in April-May (Scherf, 1964a). Adults emerge in late summer (Reinheimer & Hassler, 2010a).

BENELUX

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).

larva

synonyms

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).

notes

Rare in the Netherlands (Heijerman, 1993a).

references

Buhr (1933a), Caillol (1954a), Dieckman (1976a), Heijerman (1993a), Hering (1930a, 1957a), le Monnier (2003a), Morris (1993a), Reinheimer & Hassler (2010a), Robbins (1991a), Scherf (1964a), Sønderup (1949a), Thompson (1994a), Vorst (2010a).

23/01/2017

pub 23.i.2017 · mod 25.vii.2017