Aculus tetanothrix is a species of mite which causes galls on the leaves of willows (Salix species). It was first described by Alfred Nalepa in 1889.
Other Names: Aculops tetanothrix, Ácaro de Agalla Roja, Videknottror, Vlnovník Vrbolistový, Willow Gall Mite, Ивовый Галловый Клещик