Andricus hartigi (Hartig, 1843)

on Quercus

Andricus hartigi on Quercus pubescens

Quercus pubescens, France, leg Benoît Huc © Sébastien Carbonelle

gall

Gall derives from a dormant bud on the stem or the underside of a thick branch. The gall itself is unilocular, rotund and pea-sized. However, it is completely hidden by some 30 processes, each consisting of a narrow stalk, followed by a broad cone that ends in a slender curved spine. The gall therefore has the appearance of a heavily spinose wallnut.

hostplants

Fagaceae, monophagous

Quercus frainetto, petraea, pubescens, robur.

notes

The sexual generation could be Andricus cydoniae (Stone ao, 2008a).

references

Buhr (1965a), Hellrigl (2009a), Hellrigl & Bodur (2015a), Katılmış & Kıyak (2008a), Kemal & Koçak (2010a), Marković (2015a), Melika (2006a), Melika, Csóka & Pujade-Villar (2000a), Pellizzari (2010a), Stone, Atkinson, Rokas ao (2008a), Tomasi (2014a).

mod 21.x.2017