Transferred to other genera:

Styloctetor austriacus Kulczyński, 1898 -- see Trichoncoides

Styloctetor machadoi Miller, 1970 -- see Ceratinopsis

Styloctetor penicillatus (Westring, 1851) -- see Moebelia

Styloctetor simplex Kulczyński, 1908 -- see Semljicola

In synonymy:

Styloctetor asiaticus (Andreeva & Tystshenko, 1970, T from Thyreosthenius) = Styloctetor romanus O. Pickard-Cambridge, 1873 (Tanasevitch, 1983b: 1786, sub Ceratinopsis)

Styloctetor incautus (O. Pickard-Cambridge, 1872, T from Lophomma) = Styloctetor romanus O. Pickard-Cambridge, 1873 (Bosmans, 1994a: 234, sub Ceratinopsis)

Styloctetor lucidus (O. Pickard-Cambridge, 1873, T from Cornicularia) = Styloctetor compar Westring, 1861 (Bristowe, 1939: 67, sub Anacotyle stativa)

Styloctetor obscurus (Emerton, 1919, T from Ceratinopsis) = Styloctetor compar Westring, 1861 (Wunderlich, 1970: 406, sub Ceratinopsis stativus)

Styloctetor stativus (Simon, 1882, T from Gongylidiellum) = Styloctetor compar Westring, 1861 (Breitling et al., 2015: 71)

Styloctetor tauricus (Thorell, 1875, T from Diplocephalus) = Styloctetor romanus O. Pickard-Cambridge, 1873 (Millidge, 1977: 55, sub Ceratinopsis)

Homonym replaced:

Styloctetor orientalis (Eskov, 1989, sub Ceratinopsis) -- see Styloctetor okhotensis Eskov, 1993 Marusik et al., 1993a