Cherry gall wasp
Enw gwyddonol: Cynips quercusfolii
Living up to its name, the cherry gall wasp produces growths, or 'galls', on oak leaves that look like red cherries. Inside the gall the larvae of the wasp feed on the host tissues but cause little damage.
Species information
Ystadegau
Diameter of gall: 2cmStatws cadwraethol
Common.