Intertaxon relationships
species
Curculio elephas (Gyllenhal, 1835)
Castanea sativa Mill. - Sweet Chestnut 
Quercus petraea (Matt.) Liebl. - Sessile Oak
Quercus pubescens Willd. - Downy Oak
Quercus robur L. - Pedunculate Oak
Castanea sativa Mill. - Sweet Chestnut