Aculops macrotrichus

The mite Aculops macrotrichus causes galls on the leaves of Hornbeam and Hop Hornbeam. The underside of the vein is modified into a way ridge with a slit like opening along the vein on the upperside. Several veins may be affected and leaves can become totally distorted.

Adult Gall

Adult: Unless identified by a recognised expert, a photo is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used and describe the size and identifying characters.

Gall: Unless identified by a recognised expert, a photo is required. If the photo doesn't show the key ID features then in the comments box describe the size and identifying characters you have observed.

Where Hornbeam is present.

When Hornbeam is in leaf.

Status in Britain is difficult to determine due to lack of records.

Status in Leicestershire and Rutland not known.