Transferred to other genera:
Gongylidium clavum Zhu & Wen, 1980 -- see Eskovina
Gongylidium crassipalpe Caporiacco, 1935 -- see Collinsia
Gongylidium dentiferum (Westring, 1861) -- see Hylyphantes
Gongylidium improbum (O. Pickard-Cambridge, 1879) -- see Entelecara
Gongylidium lucidum (O. Pickard-Cambridge, 1873) -- see Styloctetor
Gongylidium macrochelis Emerton, 1917 -- see Macrargus
Gongylidium morum O. Pickard-Cambridge, 1894 -- see Diplocephalus
Gongylidium nigriceps Kulczyński, 1916 -- see Tmeticus
Gongylidium rugulosum Song & Li, 2010 -- see Vietnagone
Gongylidium septentrionale Kulczyński, 1908 -- see Hybauchenidium
Gongylidium unidentatum Emerton, 1917 -- see Vermontia
Nomen dubium:
Gongylidium gebhardti Kolosváry, 1934b: 14, f. 6 (m, Hungary) -- Breitling et al., 2016b: 59