Transferred to other genera:

Gonatium acripes Denis, 1962 -- see Ceratinopsis

Gonatium acripes infuscatum Denis, 1962 -- see Ceratinopsis

Gonatium femineum Roewer, 1942 -- see Araeoncus

Gonatium fuegianum Tullgren, 1901 -- see Catacercus

Gonatium griseolineatum Schenkel, 1936 -- see Gongylidioides

Gonatium inflatum Sørensen, 1898 -- see Scotinotylus

Gonatium insigne Bösenberg, 1902 -- see Oedothorax

In synonymy:

Gonatium bifidum (O. Pickard-Cambridge, 1863) = Gonatium rubens Blackwall, 1833 (Simon, 1926: 514)

Gonatium buettneri Schenkel, 1947 = Gonatium rubens Blackwall, 1833 (Millidge, 1981d: 257)

Gonatium cheliferum (Wider, 1834) = Gonatium rubens Blackwall, 1833 (Simon, 1884a: 554)

Gonatium cinctum Schenkel, 1936 = Gonatium japonicum Simon, 1906 (Millidge, 1981d: 257)

Gonatium corallipes (O. Pickard-Cambridge, 1875) = Gonatium paradoxum L. Koch, 1869 (Thaler, 1972a: 40)

Gonatium isabellinum (C. L. Koch, 1841) = Gonatium rubellum Blackwall, 1841 (Simon, 1926: 514)

Gonatium opimum Oi, 1960 = Gonatium japonicum Simon, 1906 (Millidge, 1981d: 257)

Nomina dubia:

Gonatium amdoense Schenkel, 1963: 111, f. 65 (f, China) -- Millidge, 1981d: 259

Gonatium convexum Kulczyński, 1885: 38, pl. 10, f. 17 (f, Russia/Kamchatka) -- Millidge, 1981d: 259, Marusik et al., 1993b: 83

Gonatium crassiventre Strand, 1913a: 351 (f, DR Congo) -- Millidge, 1981d: 259

Gonatium fuscum Bösenberg, 1902: 161, pl. 14, f. 217 (f, Germany) -- Breitling et al., 2015: 71

Gonatium gilbum Bösenberg, 1902: 162, pl. 14, f. 218 (f, Germany) -- Breitling et al., 2015: 71

Gonatium lividulum Simon, 1908d: 416 (f, Australia/Western Australia) -- Millidge, 1981d: 260

Gonatium pallidum Bösenberg, 1902: 161, pl. 14, f. 215 (f, Germany) -- Breitling et al., 2015: 71

Gonatium rufum Caporiacco, 1934b: 134, f. 6 (f, Libya) -- Millidge, 1981d: 260