Lignyodes bischoffi Blatchley, 1916
on Fraxinus
Fraxinus pennsylvanica fruits with oviposition scars (from Wanat & Mocarski)
gall
a solitary larve develops in the fruit, completely devouring its contents. The oviposition scar, generally in the basal, thickest part of the fruit, turns intensely purple, which enables to recognise attacked fruits until late autumn. The host plant, like the weevil originally north American, is regularly planted in eastern Europe.
host plants
Oleaceae, monophagous
Fraxinus americana, pennsylvanica.
Rarely, and in small numbers also Fraxinus angustifolia subsp. oxycarpa, excelsior, ornus.
distribution within Europe
larva, pupa
See Gosik, Skuhrovec, Toševski & Caldara (2017a).
synonyms
Lignyodes slovacicus Dieckmann 1970.
notes
Infected fruits mostly soon drop, and a sign of infection is a large numbers of fallen fruits under a tree (Arzanov).
references
Arzanov (2013a), Cunev (2013a), Dieckmann (1970b, 1974b), Gosik, Łętowski, Mokrzycki & Wanat (2001a), Gosik, Skuhrovec, Toševski & Caldara (2017a), Krátký (2019a), Wanat & Mocarski (2008a), Yunakov, Nazarenko, Filimonov & Volovnik (2018a).