Nysius Dallas, 1852a: 551. Type species by subsequent designation (Opinion 319, 1955): Lygaeus thymi Wolff, 1804.
Macroparius Stål, 1872c: 43 (as subgenus of Nysius; syn. Schmitz & Péricart, 1993: 177). Type species: see note.
Hemidiptera Leon, 1890: 13 (syn. Horváth, 1910e: 14). Type species by monotypy: Hemidiptera haeckeli Leon, 1890, Sri Lanka.
Anorthus Horváth, 1890: 190 (as subgenus of Nysius; junior homonym of Anorthus Loew, 1850, Diptera). Type species by monotypy: Nysius atlantidum Horváth, 1890.
Anorthuna Strand, 1928: 46 (syn. Ashlock, 1967: 49). New name for Anorthus Horváth, 1890.
Brachynysius Usinger, 1942c: 44 (syn. Eyles, 1960: 71). Type species by monotypy: Brachynysius convexus Usinger, 1942 (= Nysius huttoni White, 1878), New Zealand.
Tropinysius Wagner, 1958v: 15 (as subgenus of Nysius; syn. Ashlock, 1967: 49). Type species by original designation: Heterogaster senecionis Schilling, 1829.