Megymenum Guérin-Méneville, 1831: pl. 12, fig. 1; 1838: 51. Type species by monotypy: Megymenum dentatum Guérin-Méneville, 1831, Australian Region.
Amaurus Burmeister, 1834a: 294 (syn. Burmeister, 1835: 349). Type species by subsequent designation (Kirkaldy, 1909a: 258): Cimex brevicornis Fabricius, 1787, Oriental Region.
Pseudaradus Burmeister, 1834b: 19, 21 (syn. Burmeister, 1835: 349). Type species by original designation: Cimex brevicornis Fabricius, 1787.
Megalymenum Burmeister, 1835: 349. Unjustified emendation.
Platydius Westwood, 1835: 446 (syn. Herrich-Schaeffer, 1853b: 125). Type species by original designation: Cimex brevicornis Fabricius, 1787.
Anoplocephala Stål, 1870: 88 (as subgenus of Megymenum; syn. Durai, 1987: 244). Type species by subsequent designation (Kirkaldy, 1909a: 258): Megymenum semivestitum Vollenhoven, 1868, E Indonesia.
Pissistes Stål, 1870: 88 (as subgenus of Megymenum; syn. Durai, 1987: 244). Type species by monotypy: Megymenum gracilicorne Dallas, 1851.