Cynips disticha Hartig, 1840

on Quercus; agamous generation

Cynips disticha gall on Quercus robur

Quercus robur, Frankijk, dép Loiret, Pers-en-Gâtinais © Eugène Vandebeulque

Cynips disticha gall on Quercus robur

gall in side view

Cynips disticha gall on Quercus robur

gall, vertical section

Cynips disticha gall on Quercus robur

larva

Cynips disticha gall

Quercus robur, Dronten © Arnold Grosscurt

gal

De gall is yellow to reddish brown, flat-topped or even naveled, thin but hard-walled, and unique by having two chambers; the larva occupies the lower one. Hibernation in the fallen galls.

hostplants

Fagaceae, monophagous

Quercus petraea, pubescens, robur.


on Quercus; sexual generation

gall

The sexual generation makes spindle-shaped galls that are attached at one point to the leaf margin, usually at the end of the midrib or a thick lateral vein.

hostplants

Fagaceae, monophagous

Quercus petraea, pubescens, robur.

synonyms

Dryophanta disticha.

inquilines

Synergus pallicornis.

references

Béguinot (2002a,e,g,h, 2006a,c, 2007b, 2012a), Bellmann (2012a), Buhr (1965a), Cogolludo (1921a), Dauphin & Aniotsbehere (1997a), Dietrich (2016a), Hellrigl (2009a, 2010a), Hellrigl & Bodur (2015a), Kollár (2011a), Kwast (2014a), Lambinon, Carbonelle & 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).

mod 17.x.2017