Red Currant Gall

Cynips divisa

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. The red-wart gall is the sexual phase of the same species.

Scientific name
Cynips divisa
Family
Cynipidae