Andricus gemmicola Kieffer, 1901
picture of the gall by Eady & Quinlan (1963a), based on material from the Vienna museum; no further details available.
Smooth, oval, 1 mm high bud scale, for 2/3 hidden by the bud scales, not deciduous; wasps emerging in summer (description based on Kieffer, 1901b). According to Houard the gall is green, thin-walled, and indeed deciduous.
Quercus petraea, pubescens, robur.
distribution within Europe
Dauphin & Aniotsbehere (1997a), Eady & Quinlan (1963a), Houard (1908a), Kieffer (1901b).