Andricus paradoxus (Radoszkowski, 1866)

on Quercus, agamous generation

Andricus paradoxus FF: gall on Quercus robur

Quercus robur, Biddinghuizen, Spijk- en Bremerbergbos © Hans Jonkman

Andricus paradoxus FF: gall on Quercus robur

closer look

Andricus paradoxus FF on Quercus robur

Quercus robur, Belgium, prov. Namur, Feschaux, RN Rend Peine © Stéphane Claerebout

Andricus paradoxus gall

Quercus robur, Enter © Arnold Groscurt

Andricus paradoxus gall

cut lengthwise

same species, but only one larva chamber

Andricus paradoxus FF gall on Quercus robur

Quercus robur, Germany, Saarland, Bexbach © Volker Fäßler; probably this is a very young gall, of which Buhr (1964b) writes it has a “somewhat fleshy, soon withering, outer layer”.

gall

Up to 8 mm long smooth bud gal on a two years old shoot, acorn- or cone-shaped, with an apiculus on the top. The ripe gall is generally brownish violet with short whitish length streaks. Against end of May they drop to the ground; only after one or three years the wasps appear.

hostplants

Fagaceae, monophagous

Quercus robur.


on Quercus, sexual generation

gall

Catkin galls, less then 2 mm in size, globular, verrucose, covered by hairs of various length.

hostplants

Fagaceae, monophagous

Quercus petraea, pubescens, robur.

synonym

Andricus albopunctatus Schlechtendal, 1870, A. lambertoni Kieffer, 1897.

references

Bellmann (2012a), Buhr (1965a), Cerasa (2015a), Dauphin & Aniotsbehere (1997a), Hellrigl (2009a), Hellrigl & Bodur (2015a), Kwast (2012a, 2014a), Meika (2006a), Melika, Csóka & Pujade-Villar (2000a), Mutun & Dinç (2014a), Nieves-Aldrey (1983a, 2001a), Nieves-Aldrey, Gómez, Hernández Nieves & Lobo (2006a), Redfern & Shirley (2011a), Roskam (2009a), Tomasi (2014a), Wiebes-Rijks (1976a), Williams (2010a).

mod 18.v.2018