Oak apple gall wasp
Enw gwyddonol: Biorhiza pallida
Living up to its name, the oak apple gall wasp produces growths, or 'galls', on oak twigs that look like little apples. Inside the gall, the larvae of the wasp feed on the host tissues, but cause little damage.
Species information
Ystadegau
Diameter of gall: up to 5cmStatws cadwraethol
Common.