Neuroterus anthracinus (Curtis, 1838)

on Quercus, agamous generation

Neuroterus anthracinus gall precursor

Quercus robur, Nieuwendam: the flaps along the underside of the midrib, between which the gall itself is to develop

Neuroterus anthracinus gall precursor

same, seen from the side

Neuroterus anthracinus gall

Quercus robur, Hilversum, Zwarte Berg: the gall itself

Neuroterus anthracinus gall, opened

Quercus robur, Holterberg: fully developed gall, opened

Neuroterus anthracinus (agam): gall on Quercus petraea

Quercus petraea, Hungary, Budapest © László Érsek

Neuroterus anthracinus (agam): gall on Quercus petraea

the aspect ranges from colourful …

Neuroterus anthracinus (agam): gall on Quercus petraea

to completely pale

Neuroterus anthracinus (agam): gall on Quercus petraea

transverse section

Neuroterus anthracinus: gall on Quercus robur

Quercus robur, Biddinghuizen, Spijk- en Bremerbergbos © Hans Jonkman: unusually colourful gall

Gall

Galls from August till October, mature in September.

hostplants

Fagaceae, mnophagous

Quercus cerris, coccifera, frainetto, x haynaldiana, ilex, infectoria, lusitanica, macanthera, petraea, pubescens, pyrenaica, robur, rubra, suber.


on Quercus, sexual generation

Neuroterus anthracinus FM: gall on Quercus robur

Quercus robur, Germany, Saarland, Bexbach © Volker Fäßler

Neuroterus anthracinus FM: gall on Quercus robur

opened gall

Neuroterus anthracinus: sexual generation gall on Quercus robur

Quercus robur, Belgium, East Flanders, Geraardsbergen, Dendervallei Onkerzele @ Bart Uitterhaegen

Neuroterus anthracinus: sexual generation gall on Quercus robur

de gall is broadly seated on the scars of the bud scales

Neuroterus anthracinus: sexual generation gall on Quercus robur

larva in opened gall

Neuroterus anthracinus: sexual generation gall on Quercus robur

young gall

Neuroterus anthracinus: sexual generation gall on Quercus robur

Quercus robur, Belgium, East Flanders, Overboelare – Plancken @ Bart Uitterhaegen: wasp in the gall

The sexual generation makes 2-3 mm long, oval galls on young shoots,on the scars of the bud scales that just have fallen off; commonly they are hidden by remaining bud scales. They thereby resemble the galls of Andricus quercuscortis, but differ because the galls are broadly attached, rather then on a narrow base.

hostplants

Fagaceae, mnophagous

Quercus lusitanica, petraea, pubescens, pyrenaica, robur.

synonyms

Andricus anthracinus; Andricus, Neuroterus ostreus Giraud, 1859; Andricus, Neuroterus furunculus Beyerinck, 1882.

inquilines

Synergus pallipes.

references

Béguinot (2001c, 2002a,d,e,f,g,h, 2005a, 2006a,c, 2007b, 2012a), Bellman (2012a), Buhr (1965a), Ceresa (2015a), Chinery (2011a), Cogolludo (1921a), Coulianos & Holmåsen (1991a), Dauphin & Aniotsbehere (1997a), Eady & Quinlan (1963a), Ecott (2012a), Groom (2011a), Hellrigl (2009a), Hellrigl & Bodur (2015a), Houard (1908a), Katılmış & Kıyak (2008a), Kemal & Koçak (2010a), Kollár (2011a), Koops (2013a), Kwast (2012a, 2015a), Lambinon, Carbonnelle & Claerebout (2015a), Lambinon & Romain (2009a), Lambinon, Schneider & Chevin (2003a), Lehmann & Hannover (2016a), Marković (2014a, 2015a), Melika (2006a), Melika, Csóka & Pujade-Villar (2000a), Nieves-Aldrey (1983a, 2001a), Nieves-Aldrey, Gómez, Hernández Nieves & Lobo (2006a), Pujade-Villar (2005b), Redfern & Shirley (2011a), Roskam (2009a), Sylvén (1960a), Williams (2010a).

mod 22.viii.2018