The Gall Mite Cecidophyes rouhollahi causes galls to form distorting the leaves of Goosegrass (Galium aparine). These galls were previously thought to be caused by Cecidophyes galii but this has now been disproved, and there is no evidence at present that C. galii causes galls in Britain. The galls of Cecidophyes rouhollahi are far easier to see than the mites.

Gall Adult

Anywhere that the host plant grows

The leaf of the host plant rolls upwards from the midrib to form a tube shape in which the mite lives.

Common and widespread in Britain

Common in Leicestershire and Rutland.