Andricus grossulariae f. sexual

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Description

In spring, galls are caused by the sexual generation of wasps on the catkins of Turkey Oak. These galls grow to about 6mm and shaped like pointed peas; green at first, then becoming bright red. The vacated brown galls often persist into autumn.

Identification difficulty

Recording advice

Photograph the gall on oak, and note the host species

Habitat

Turkey Oaks

VC55 Status

occasional

Further Information

See British Plant Galls (Redfern & Shirley, 2023)

Graham Calow
Ullesthorpe
30 April 2011
sexual generation galls on Turkey Oak catkins
Peter Smith
Leicester, former Western Park Golf Course
17 August 2024
old galls on Turkey Oak
Graham Calow
Sapcote
07 September 2014
Old sexual generation gall on Turkey Oak
Graham Calow
Frolesworth
29 July 2015
old sexual generation galls on
Turkey oak catkins, showing exit holes
Melinda Bell
Whitwick, Swannymote Wood
28 July 2021
old galls of sexual stage
sue
Bagworth, Tigers Arboretum
27 May 2023