Cynips quercus (Fourcroy, 1785)

on Quercus, agamous generation

Cynips quercus  FF: gall on Quercus pubescens

Quercus pubescens, France, dép. Alpes-Maritimes, St. Vallier-de-Thiey, 600 m © Pierre Gros

Cynips quercus  FF: gall on Quercus pubescens

same gall, other aspect

Cynips cf quercus: gall on Quercus robur

Quercus robur, Belgium, prov. Namur, Nismes, Fondry des Chiens © Stéphane Claerebout. Because this would form the first record of this species in the Benelux, and moreover the hostplant is very unusual for this species, the identification can only be provisional.

Cynips cf quercus: gall on Quercus robur

detail

Cynips cf quercus: gall on Quercus robur

underside of the leaf

Cynips cf quercus: gall on Quercus robur

the gall

Cynips cf quercus: gall on Quercus robur

opened gall

gall

pea gall, about 10 mm large, at the underside of the leaf. The outside is yellowish brown, often somewhat pruinose, often covered with many blunt warts. The mature gall is hard (contrary to the gall of C. quercusfolii, that remains fleshy even at maturity) and has a rather large gall chamber that is connected with the base of the gall by a narrow tunnel.

hostplants

Fagaceae, monophagous

Quercus pubescens.

Rarely also frainetto, petraea, robur.


on Quercus, sexual generation

gall

3-5 mm long ovoid gall derived from a dormant bud; the gall is green to red and densely red-hairy (Bellmann)

hostplants

Fagaceae, monophagous

Quercus pubescens.

synonyms

Dryophanta pubescentis Hartig, 1881..

inquilines

Synergus pallicornis, pallipes.

references

Béguinot (2006b), Bellmann (2012a), Buhr (1965a), Ceresa (2015a), Cogolludo (1921a), Dauphin & Aniotsbehere (1997a), Hellrigl (2009a, 2010a, 2012a), Hellrigl & Bodur (2015a), Ilie & Marinescu (2011a), Katılmış & Kıyak (2008a), Kemal & Koçak (2010a), Kwast (2012a, 2014a), Marković (2015a), Melika (2006a), Melika, Csóka & Pujade-Villar (2000a), Nieves-Aldrey (2001a), Nieves-Aldrey, Gómez, Hernández Nieves & Lobo (2006a), Pujade-Villar, Kwast, Thuroczy & Bellido (2002a), Stefănescu (2009a), Tomasi (2014a).

mod 29.x.2017