Cynips cornifex Hartig, 1843

on Quercus

Quercus pubescens, Hongarije, Budapest, Kamaraerdő, 5.viii.2019 © László Érsek

underside of a leaf with galls

the upper side of the leaf is unmodified

gall in detail

the base of the gall is not fused with the leaf

only a thin “umbilical chord” connects the gall with its substrate

larva and gall

another image

larva

Quercus pubescens, France, dép. Alpes-Maritimes, Blausasc, 5.vii.2014 © Pierre Gros

gall

10-12 mm long, erect, horn-like galls at the underside of te leaf. The gall seems to be attached at a broad base, but actually is connected with the leaf by a thin stalk only.

host plants

Fagaceae, narrowly monophagous

Quercus infectoria & subsp. veneris, lusitanica, petraea, pubescens.

notes

Only the agamous generation is known.

references

Bellmann (2012a), Buhr (1965a), Dauphin & Aniotsbehere (1997a), Hellrigl (2009a), Hellrigl & Bodur (2015a), Houard (1908a), Katılmış & Kıyak (2008a), Kemal & Koçak (2010a), Kwast (2012a), Marković (2014a, 2015a), Melika (2006a), Melika, Csóka & Pujade-Villar (2000a), Mete & Demirsoy (2012a), Pellizzari (2010a), Shachar, Melika, Inbar & Dorchin (2018a), Tomasi (2014a).