Red-pea gall
Videos
The red-pea gall or red currant gall develops as a chemically induced distortion arising from the underside of the mid-rib of a vein on Quercus species and it is attached by a short stalk or peduncle.
Red Pea gall Cynips divisa on Oak
Andricus lignicola
Videos
Cola-nut galls develop as a chemically induced distortion of leaf axillary or terminal buds on pedunculate oak or sessile oak trees, caused by the agamic gall wasp Andricus lignicola which lays single
Red-pea gall
…These occur commonly in this native species. Cola-nut gall Knopper gall…
Andricus lignicola Cola nut Gall
Cola-nut gall cut open to show the unilocular cavity
Oak marble galls showing two stunted and two normal-sized examples
Cola-nut gall showing exit hole