Neuroterus tricolor (Hartig, 1841)

on Quercus, agamous generation

Neuroterus tricolor FF galls

gall (from Eady & Quinlan, 1963a)

gall

The agamous generation makes white or reddish lens- of dish-shaped galls at the underside of a leaf. They resemble those of Neuroterus quercusbaccarum, but are appreciably smaller: 2-3 mm. Galls from July till September, mature in August.

hostplants

Fagaceae, monophagous

Quercus frainetto, lusitanica, petraea, pubescens, pyrenaica, robur.


on Quercus, sexual generation

Neuroterus tricolor: galls on Quercus pubescens

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

Neuroterus tricolor: galls on Quercus pubescens

at the upper side just a slight discolouration is recognisable

Neuroterus tricolor: galls on Quercus pubescens

the galls

Neuroterus tricolor gall

Quercus robur, Reusel: young gall, c. 2 mm

parasite

Small pilose warts, often gregarious. Galls from May till August, mature in June.

hostplants

Fagaceae, monophagous

Quercus frainetto. ilex, lusitanica, petraea, pubescens, pyenaica, robur, suber.

synonyms

Neuroterus tricolor ulysipponensis Tavares, 1928; N. fumipennis Hartig, 1841.

notes

the gall mainly occur on the young leaves of the lammas growth (Buhr).

references

Béguinot (2007b), Bellmann (2012a), Buhr (1965a), Cerasa (2015a), Chinery (2011a), Cogolludo (1921a), Eady & Quinlan (1963a), Hellrigl (2009a), Hellrigl & Bodur (2015a), Houard (1908a), Katılmış &a Kıyak (2008a), Kemal & Koçak (2010a), Kwast (2012a, 2014a), Lambinon, Schneider & Chevin (2003a), Lehmann & Hannover (2016a), Melika (2006a), Nieves-Aldrey (1998a, 2001a), Nieves-Aldrey, Gómez, Hernández Nieves & Lobo (2006a), Redfern & Shirley (2011a), Roskam (2009a), Tomasi (2014a), Vilarrubia Garet (1956a), Williams (2010a).

mod 22.viii.2018