Plant Parasites of Europe

leafminers, galls and fungi

Andricus kollari

Andricus kollari (Hartig, 1843)

oak marble gall wasp

on Quercus, agamous generationa

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, frainetto, x hispanica, ilex, infectoria, lusitanica, mongolica, petraea, pontica, pubescens, pyrenaica, robur, rotundifolia, suber.

on Quercus, 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.

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.


Ceroptres clavicornis; Synergus gallaepomiformis, gallaicus, hayneanus, ibericus, pallidipennis, pallipes, reinhardi, umbraculus.

parasitoids, predators

Bootanomyia dorsalis; Caenacis lauta; Cecidostiba adana; Cyrtoptyx robustus; Eupelmus annulatus, confusus, messene, urozonus; Eurytoma brunniventris; Hobbya stenonota; Mesopolobus amaenus, fasciiventris, fuscipes, sericeus, tibialis, xanthocerus; Ormyrus pomaceus; Sycophila biguttata, variegata.


Askew (1961b), 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), 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), 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), Stojanova (2005a), Tavares (1905a), Tomasi (2003a, 2012a, 2014a), Wiebes-Rijks (1978a), Williams (2010a).

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