Plant Parasites of Europe

leafminers, galls and fungi

Andricus miriami

Andricus miriami Shachar, 2015

on Quercus, agamous generation


The gall, that derives from a bud, is a globular, 2-4 cm large complex of 10-40 mushroom-shaped elements with a conical tip. Each element is 11-20 mm long and 8-12 wide at the top; in the basal part 4-6 gall chambers are located. Young galls are green and soft, covered by a whitish down; later they turn brown and woody. Old galls remain for years on the tree.

host plants

Fagaceae, monophagous

Quercus ithaburensis.

on Quercus, sexual generation


Mulberry-like catkin galls, composed of 17–40 small units. Young galls are soft and green to light brown at their tips, and completely covered by white velvety hairs and coated by nectar that attracts other insects. Mature galls are 12–17 mm long, 10–14 mm wide, and their apical part turns darker.

host plants

Fagaceae, monophagous

Quercus cerris, libani.


Andricus morula Shachar, Inbar & Dorchin, 2017.


Shachar, Melika & Dorchin (2015a), Shachar, Melika, Inbar & Dorchin (2018a).

Last modified 6.xii.2018