Lignyodes bischoffi Blatchley, 1916

on Fraxinus

Lignyodes bischoffi: oviposition scars on Fraxinus pennsylvanica fruits

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

(PESI, 2019).

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), Wanat & Mocarski (2008a).

mod 30.vi.2019