Trachycoccus Ferris 1955: 215. Type species: Trachycoccus hyperici Ferris by monotypy and original designation (junior homonym discovered by Williams 1961: 93). Notes: Homonym of Trachycoccus Borchsenius 1950: 781.
Hypericicoccus Williams 1963: 93. Type species: Trachycoccus hyperici Ferris 1955: 215 (replacement name for Trachycoccus Ferris 1955).
Diagnosis of adult female: Derm along body margin with numerous small projections; anal lobes not projecting; enlarged setae with broad bases similar to most species of Ovaticoccus; ventral setae enlarged near anal ring; microtubular ducts on both surfaces; macrotubular ducts absent; multilocular pores on both surfaces; cruciform pores present; anal ring with unusually robust setae; legs and antennae reduced.