Plant Parasites of Europe

leafminers, galls and fungi

Andricus kollari

Andricus kollari (Hartig, 1843)

oak marble gall wasp

on Quercus, agamous generation

Andricus kollari on Quercus robur

Quercus robur, Loenen, 22.vii.2022 © Arnold Grosscurt: adult, still in the gall

Andricus kollari on Quercus robur

fresh imago

Andricus kollari: galls on Quercus robur

Quercus robur, Hungary, Budapest, 14.vii.2017 © László Érsek: young galls

Andricus kollari: gall on Quercus robur

section with larva

Andricus kollari: larva


Andricus kollari: galls on Quercus robur

Quercus robur, Hungary, Kimle, 31.vii.2017 © László Érsek: mature galls

Andricus kollari: gall on Quercus robur

section with pupa

Andricus kollari: pupa


Andricus kollari: galls on Quercus robur

Quercus robur, Roggebotzand © Hans Jonkman: fresh galls

Andricus kollari galls

Quercus robur, Bergen op Zoom, Markiezaat: old galls in spring

Andricus kollari: ripe galls on Quercus robur

Quercus robur, Roggebotzand (Flevoland) © Hans Jonkman: ripe galls in autumn

Andricus kollari

Quercus robur, Helenaveen, Mariapeel: the bright white pupa in the central larval chamber

Andricus kollari pupa

the pupa

Andricus kollari inquilines

Quercus robur, Tilburg, de Blaak: the marble gall has but one larval chamber, but here the larva and its chamber have been ousted by a number of inquilines, each in its own compartment

Andricus kollari parsitised gall

Quercus robur, Belgium, prov. Namur, Dinant: old parasitised gall © Jean-Yves Baugnée


Perfectly globular, unilocular, up to 2 cm large gall; at maturity the gall is hard and woody. Fresh galls, greenish to brownish, can be found from June; the are ripe in September. The gall develops from the base of a bud, that itself is aborted.

host plants

Fagaceae, monophagous

Quercus canariensis., cerris, frainetto, hartwissiana, x hispanica, ilex, infectoria, lusitanica, mongolica, petraea, pontica, pubescens, pyrenaica, robur, rotundifolia, suber, vulcanica.

sexual generation

Andricus kollari FM gall

gall (from Eady & Quinlan, 1963a)

Andricus kollari FM gall on Quercus cerris

Quercus cerris galls (from Houard, 1908a)


Out of an axillary or terminal bud develop 3-8 galls, each 1.5 x 4 mm. The gall is smooth, elliptic or sausage-shaped, sometimes curved and banana-shaped. The colour is yellowish brown, red, or brown. The bud scales that initially cover the galls soon are shed.

host plants

Fagaceae,narrowly monophagous

Quercus cerris, x hispanica.

distribution within Europe

PESI (2024).

Because kollari occurs also in regions where Q. cerris does not live it is assumed that the sexual generation can be skipped permanently.


Cynips kollari; C. tinctoria auctorum; Andricus circulans Mayr, 1870.


Askew (1961b), Azmaz (2015a), Azmaz & Katilmiş (2017a), Bayrak (2019a), Béguinot (2002a, 2003a, 2006a,c, 2007b, 2012a), Bellido, Ros-Farré, Melika & pujade-villar (2003a), Bellmann (2012a), Blanes-Dalmau, Caballero-López & Pujade-Villar (2017a), Braggion (2013a), Buhr (1965a), Burton, Ellis & Schneider (2022a), Cerasa (2015a), Chevin (2011a), Chireceanu, Chiriloaie, Teodoru & Sivu (2015a), Cogolludo (1921a), Dauphin & Aniotsbehere (1997a), Demirel, Tataroğlu & Katilmiş (2023a), Eady & Quinlan (1963a), Fusu (2017a), Groom (2011a), Hellrigl (2009a, 2010a, 2012a), Hellrigl & Bodur (2015a), Houard (1908a), Ilie & Marinescu (2011a), Karaca & Katılmış (2020a), Katılmış & Kıyak (2008a), Kemal & Koçak (2010a), Kollár (2011a), Koops (2013a), Kwast (2012a, 2014a), Lambinon, Carbonnelle & Claerebout (2015a), Lambinon, Schneider & Chevin (2003a), Lehmann & Hannover (2016a), Marković (2014a), Melika (2006a, 2018a), Melika, Csóka & Pujade-Villar (2000a), Nieves-Aldrey (1983a, 2001a), Nieves-Aldrey, Gómez, Hernández Nieves & Lobo (2006a), Redfern & Shirley (2011a), Ros & Pujade (1997a), Roskam (2009a), Schneider (2016a), Schönrogge, Walker & Crawley (1999a), Stojanova (2005a), Tavares (1905a), Tomasi (2003a, 2012a, 2014a), Wiebes-Rijks (1978a), Williams (2010a).

Last modified 4.i.2024