The purpose of this application is to conserve usage of the name Adelgidae Schouteden, 1909 for a family of conifer-feeding insects, some species of which are important forestry pests. Although it has nomenclatural priority, Pineini Nüsslin, 1909 is alternately considered a subordinate taxon to or a synonym of Adelgidae. Meanwhile, Chermaphidinae Hunter, 1901, a disused name treated as a synonym of Adelgidae or Pineini, has nomenclatural priority over both. In accordance with Article 23.9.3, the present application requests a ruling under the plenary power described in Article 81.2.3 to conditionally suppress Chermaphid- and Pine- with respect to Adelg-.