Acari: Eriophyoidea - gall mite Aceria anthocoptes Photographs on Cirsium arvense, Creeping Thistle Hosts: Cirsium arvense, C. vulgare and Scorzoneroides autumnalis Leaves distorted and sometimes hairy or browned, flower heads dwarfed with leafy, greened florets

Aceria anthocoptes
Badbury Rings, Dorset. August 2017