Buds affected by Cecidophyopsis ribis become swollen and globular and fail to develop normally. They are first noticeable in the autumn when they are unpointed and twice as large as normal buds. Inside the bud, between the closely folded leaves, are thousands of small, spherical eggs which later hatch into sausage-shaped mites with short legs near their anterior end.
Buds affected by Cecidophyopsis ribis become swollen and rounded, failing to develop normally. They are first observed in autumn when they are unpointed and twice the size of normal buds. Inside the bud, between the tightly folded leaves, are thousands of tiny, spherical eggs that later hatch into sausage-shaped mites with short legs near their front end.