Cynips disticha Hartig, 1840
red wart gall
on Quercus; agamous generation
Quercus robur, Frankijk, dép Loiret, Pers-en-Gâtinais © Eugène Vandebeulque
gall in side view
gall, vertical section
larva
Quercus robur, Dronten © Arnold Grosscurt
gal
De gall is yellow to reddish brown, flat-topped or even navelled, thin but hard-walled, and unique by having two chambers; the larva occupies the lower one. Hibernation in the fallen galls. Galls in June-September, mature in August.
host plants
Fagaceae, monophagous
Quercus coccifera, ilex, lusitanica, petraea, pubescens, robur, suber.
on Quercus; sexual generation
gall
The sexual generation makes thin-walled, unilocular, zeppelin-shaped galls that are attached with broadened point to the leaf margin, usually at the end of the midrib or a thick lateral vein. They are 3 x 5 mm, finely pubescent, without ridges. Young galls are yellowish, later they turn brown.
host plants
Fagaceae, monophagous
Quercus petraea, pubescens, robur.
synonyms
Dryophanta disticha.
inquilines
references
Béguinot (2002a,e,g,h, 2006a,c, 2007b, 2012a), Bellmann (2012a), Blanes-Dalmau, Caballero-López & Pujade-Villar (2017a), Buhr (1965a), Cogolludo (1921a), Dauphin & Aniotsbehere (1997a), Dietrich (2016a), Docters van Leeuwen (1947a), Eady & Quinlan (1963a), Hellrigl (2009a, 2010a), Hellrigl & Bodur (2015a), Houard (1908a), Kollár (2011a), Kwast (2014a), Lambinon, Carbonnelle & Claerebout (2015a), Lambinon, Schneider & Chevin (2003a), Melika (2006a), Melika, Csóka & Pujade-Villar (2000a), Nieves-Aldrey (2001a), Redfern & Shirley (2011a), Roskam (2009a), Tomasi (2014a), Williams (2010a).