Biorhiza cecconiana (Kieffer, 1901)

on Quercus

parasite

The gall would be similar to the one of the sexual generation of Cynips quercusfolii, 4 mm long, smooth or very finely hairy, brown at maturity; often a number together in a compact group. Insufficiently known species.

host plants

Fagaceae, monophagous

Quercus robur.

distribution within Europe

(PESI, 2018).

references

Houard (1908a).

mod 2.vi.2018