Plant Parasites of Europe

leafminers, galls and fungi

Andricus zappellai

Andricus zappellai Kieffer, 1901

on Quercus

Andricus zappellai: galls in Quercus trojana

Quercus trojana galls (from Houard, 1908a)


The axis of a male catkins is transformed into a fleshy, red gall, 4-6 mm thick and 5-13 mm long. The gall has a number of swellings, each one containing a gall chamber wit a thin, woody wall. The flowers have totally disappeared; a part of the gall bears erect, greyish hairs.

host plants

Fagaceae, narrowly monophagous

Quercus trojana.

distribution within Europe

(PESI, 2018).


Houard (1908a).

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