In synonymy:
Leitanoctenus Soares & Camargo, 1948 = Nothroctenus Badcock, 1932 (Lehtinen, 1967: 244, removed from S of Acanthoctenus)
Mesoctenus Mello-Leitão, 1929 = Nothroctenus Badcock, 1932 (Lehtinen, 1967: 248, removed from S of Acanthoctenus, Mesoctenus is preoccupied)
Homonym replaced:
Mesoctenus Mello-Leitão, 1929 -- see Nothroctenus Badcock, 1932
In synonymy:
Nothroctenus impar (Dahl, 1901, T from Acanthoctenus) = Nothroctenus marshi F. O. Pickard-Cambridge, 1897 (Lehtinen, 1967: 252)
Nothroctenus marshi pygmaeus (Strand, 1909) = Nothroctenus marshi F. O. Pickard-Cambridge, 1897 (Nentwig et al., 2019: 38)
Nothroctenus saraensis (Strand, 1909, T from Acanthoctenus, m only, f=Viracucha andicola) = Nothroctenus marshi F. O. Pickard-Cambridge, 1897 (Lehtinen, 1967: 252)