Plant Parasites of Europe

leafminers, galls and fungi

Andricus hystrix

Andricus hystrix Kieffer, 1897

on Quercus, agamous generation

Andricus hystrix: galls on Quercus robur

Quercus robur (from Houard, 1908a)


Bud gall on the dormant buds of thin branches. The gall itself, 3-4 mm large, thin-walled and woody, is completely hidden under about 30 spines, c. 4 mm long, that point in all directions. The spines touch each other at their base, where they are yellowish, they gradually become thinner distally and are purple in colour; often a tuft of 1-12 whitish short hairs at the very tip.


Fagaceae, monophagous

Quercus ?cerris, infectoria & subsp. veneris, petraea, pubescens, robur.

sexual generation


smooth, light brown, unilocular, very thin-walled bud gall, up to 3 mm long, almost entirely hidden by the bud scales. Characteristic is a lateral carina (Folliot & Pujade-Villar, 2006a).


Fagaceae, monophagpus

Querus cerris.

distribution within Europe

PESI (2024).


Azmaz & Katilmiş (2017a), Bellmann (2012a), Buhr (1965a), Cerasa (2015a), Demirel, Tataroğlu & Katilmiş (2023a), Folliot & Pujade-Villar (2006a), Hellrigl (2009a), Hellrigl & Bodur (2015a), Houard (1908a), Karaca & Katılmış (2020a), Katılmış & Kıyak (2008a), Kemal & Koçak (2010a), Kwast (2012a), Melika (2006a, 2018a), Melika, Csóka & Pujade-Villar (2000a), Shachar, Melika, Inbar & Dorchin (2018a), Tomasi (2014a).

Last modified 2.i.2024