Pink-bud Gall - Trigonaspis megaptera f. sexual

The gall wasp Trigonaspis megaptera causes galls to form on Oak.

The sexual generation galls, often hidden by litter, form on dormant buds at the foot of mature stems, but also on seedlings and suckers. They are up to 1 cm in size and have a waxy surface. The colour ranges from white through cream and pink to reddish brown.  The  sexual galls can also be found on twigs and stems.

[The agamic (asexual) galls are kidney/crescent-shaped, along the main vein of a leaf, and are pale green, later red/dark brown.] 

Good quality photographs required, please also state host species.

Oak trees

The sexual generation galls appear in April, maturing in May and June

Uncommon - although galls were very locally common on Bardon Hill in 2023

See British Plant Galls (Redfern & Shirley 2023)