Cynips quercus (Fourcroy, 1785)
on Quercus, agamous generation
Quercus pubescens, France, dép. Alpes-Maritimes, St. Vallier-de-Thiey, 600 m © Pierre Gros
same gall, other aspect
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.
underside of the leaf
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.
Rarely also frainetto, petraea, robur.
on Quercus, sexual generation
3-5 mm long ovoid gall derived from a dormant bud; the gall is green to red and densely red-hairy (Bellmann)
Dryophanta pubescentis Hartig, 1881..
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).