Andricus infectorius (Hartig, 1843)

on Quercus, agamous generation

Andricus infectorius on Quercus cerris

Quercus cerris, Frankrijk, Bretagne, Larmor-Baden, 24.vi.2018 © Arnold Grosscurt: young galls are completely smooth

Andricus infectorius on Quercus cerris

the gall is narrowly attached

Andricus infectorius on Quercus cerris

There is no inner gall; the central gall chamber is small and has a hard wall.

Andricus infectorius: gall on Quercus pubescens

Quercus pubescens, France, dépt. Var, Le Pradet, lieu-dit “Lou Pigno” © Stéphane Claerbout

Andricus infectorius: gall on Quercus pubescens

gall in close up

Andricus infectorius: gall on Quercus pubescens

another specimen

Andricus inectorius on Quercus pubescens

Quercus pubescens, Hungary, Budapest © László Érsek

Andricus inectorius on Quercus pubescens

opened gal

Andricus inectorius: larva

larva

gall

Globular gall, up to 1.5 cm large, on the lateral of terminal bud of a branch. The gall often basally is narrowed, reminding then of a small fig. The surface has a small number of sturdy warts. The colour of a fresh gall is green with small white specks. Around the gall chamber a hard layer.

host plants

Fagaceae, monophagous

Quercus frainetto, petraea, pubescens, robur.

notes

Although the gall shown above look quite different, that fall within the variability depicted by Melika. The Hungarian material reminds of A. sternlichti, but in that species the small warts of the gall surface are pointed.


on Quercus, sexual generation

gall

Catkin galls. They are depicted (not described) by Melika ao; they appear ovoid and very small.

host plants

Fagaceae, monophagous

Quercus cerris.

synonyms

Andricus tinctoriusnostrus Benson, 1953; Cynips tinctoria Olivier var. nostra Kieffer, 1901.
Much confusion has existed about the interpretation of A. gallaetinctoriae (Olivier, 1791). Bellido ao consider it a “nomen dubium” that in most cases is applicable to A. infectorius.

notes

For some time it has been assumed, by among others Buhr, that Andricus burgundus were the sexual generation of infectorius. This has shown to be incorrect.

references

Bellido, Ros-Farré, Melika & pujade-villar (2003a), Bellmann (2012a), Buhr (1965a), Cerasa (2015a), Dauphin & Aniotsbehere (1997a), Hellrigl (2009a, 2010a, 2012a), Hellrigl & Bodur (2015a), Houard (1908a), Ilie & Marinescu (2011a), Katılmış & Kıyak (2008a), Kemal & Koçak (2010a), Kwast (2012a, 2012), Melika (2006a), Melika, Csóka & Pujade-Villar (2000a), Tomasi (2014a).

mod 13.vi.2019