Aceria genistae


The mite Aceria genistae causes galls to form on the buds of Broom (Cytisus scoparius). The galls take the form of an irregular mass, 5 to 40mm across, formed of miniature distorted leaves covered with greyish pubescence. These galls conceal and nourish the mites. The galls are seen more often than the mites.

Identification difficulty

Adult Gall


Where Broom is present.

When to see it

Galls may be seen from late spring and are visible during most of the year.

UK Status

Infrequent or under recorded in Britain.

VC55 Status

Infrequent or under recorded in Britain.

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Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map