Lygaeidae Schilling, 1829
Nysius aa Polhemus, 1998
Nysius abnormis Usinger, 1942
Nysius andrewsi Izzard, 1936
Nysius angustatus Uhler, 1872
Nysius atlantidum Horvath, 1890
Nysius beardsleyi Ashlock, 1966
Nysius blackburni White, 1881
Nysius caledoniae Distant, 1920
Nysius chenopodii Usinger, 1942
Nysius clevelandensis Evans, 1929
Nysius coenosulus Stål, 1859
Nysius communis Usinger, 1942
Nysius contiguus Walker, 1872
Nysius convexus (Usinger, 1942)
Nysius cymoides (Spinola, 1837)
Nysius dallasi White, 1878
Nysius delectulus Perkins, 1912
Nysius delectus White, 1878
Nysius dissimilis Izzard, 1936
Nysius ericae (Schilling, 1829)
Nysius frigatensis Usinger, 1942
Nysius fucatus Usinger, 1942
Nysius fullawayi Usinger, 1942
Nysius fuscovittatus Barber, 1958
Nysius gloriae Baena & Garcia, 1999
Nysius graminicola (Kolenati, 1845)
Nysius grampianis Schmitz
Nysius grandis Baker, 1906
Nysius groenlandicus (Zetterstedt, 1838)
Nysius hardyi Ashlock, 1966
Nysius helveticus (Herrich-Schaeffer, 1850)
Nysius huttoni F.B. White, 1878
Nysius immunis (Walker, 1872)
Nysius insoletus Barber, 1947
Nysius kinbergi Usinger, 1959
Nysius lichenicola Kirkaldy, 1910
Nysius liliputanus Eyles & Ashlock, 1969
Nysius longicollis Blackburn, 1888
Nysius mittae Schmitz
Nysius mixtus Usinger, 1942
Nysius monticola Distant, 1893
Nysius neboissi Schmitz
Nysius neckerensis Usinger, 1942
Nysius nemorivagus White, 1881
Nysius niger Baker, 1906
Nysius nihoae Usinger, 1942
Nysius pacificus China, 1930
Nysius palor Ashlock, 1963
Nysius paludicola Barber, 1949
Nysius raphanus Howard, 1872
Nysius rubescens White, 1881
Nysius scutellatus Dallas, 1852
Nysius senecionis (Schilling, 1829)
Nysius spectabilis Distant, 1901
Nysius sublittoralis Perkins, 1912
Nysius suffusus Usinger, 1942
Nysius tenellus Barber, 1947
Nysius terrestris Usinger, 1942
Nysius thymi (Wolff, 1804)
Nysius turneri Evans, 1936
Nysius usingeri Izzard, 1958
Nysius vinitor Bergroth, 1891
Nysius wekiuicola Ashlock & Gagne, 1983
