Andricus sternlichti Bellido, Pujade-Villar & Melika, 2003

on Quercus

Andricus sternlichti galls on Quercus cf. ithaburensis subsp. macrolepis

Quercus cf. ithaburensis subsp. macrolepis, Greece, Lesbos, Vrisa, 4.iv.2019 © Cor Zonneveld

Andricus sternlichti galls on Quercus cf. ithaburensis subsp. macrolepis

another image

Andricus sternlichti: gall

Greece, Lesbos, Andissa, 30.iii.2019; the galls were > 35 and extremely hard

Andricus sternlichti: exuvium

detail, with exuvium

gall

globular, monolocular gall, derived from a terminal or lateral bud, with a diameter of 10-15 mm. The surface is sparsely covered by a number of 2-3 mm high pointed warts, connected by ridges. Young galls are green and fleshy, thy ripe gall is pale brown, extremely hard and does not fall off.

host plants

Fagaceae, monophagous

Quercus infectoria & subsp. veneris, pubescens, robur subsp. pedunculiflora.

notes

The galls from Lesbos were considerably larger than the description, and darker in colour.
Only the asexual generation of this species is known. If a sexual does exist, it probably lives on Q. cerris.

The gall can easily be confused with the one of A. infectorius.

references

Bellido, Ros-Farré, Melika & pujade-villar (2003a), Blanes-Dalmau, Caballero-López & Pujade-Villar (2017a), Hellrigl (2010a, 2012a), Hellrigl & Bodur (2015a), Katılmış & Kıyak (2008a), Melika (2006a), Mete & Demirsoy (2012a), Shachar, Melika, Inbar & Dorchin (2018a).

mod 11.iv.2019