Pachybrachius Hahn, 1826: pl. 18. Type species by monotypy: Pachybrachius luridus Hahn, 1826.
Plociomerus (non Ptochiomera Say, 1832): Amyot & Serville, 1843: 255 (partly).
Pamera (non Say, 1832): auct.
Diplonotus Stål, 1872c: 51 (syn. China, 1943: 239). Type species by subsequent designation (Van Duzee, 1917: 183): Pachymerus fracticollis Schilling, 1829.