Plant Parasites of Europe

leafminers, galls and fungi

Andricus quercuscalicis development

Andricus quercuscalicis (Burgsdorf, 1783)

Hymenoptera, Cynipidae

development of the agamous generaration

Andricus quercuscalicis: gall on Quercus robur

gall, early August


the gall, pulled out of the cupula


the “stalk” of the gall has pushed itself between cupula and acorn


the gall is attached to the cupula, next to the attachment of the acorn


the gall chamber, still quite small, is located in the “stalk”.

Andricus quercuscalicis gall

other specimen, autumn aspect. The gall chamber has grown proportionally.

Andricus quercuscalicis gall

the acorn has been overgrown and aborted.


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