Transferred to other genera:
Nigma gratiosa (Simon, 1881) -- see Ajmonia
Nigma numidica (Denis, 1937) -- see Ajmonia
Nigma patellaris (Simon, 1910) -- see Ajmonia
Nigma tristis (Spassky, 1952) -- see Dictyna
In synonymy:
Nigma canariensis Wunderlich, 1987 = Nigma puella Simon, 1870 (Wunderlich, 1992a: 429)
Nigma eburnea (Schmidt, 1982, T from Dictyna) = Nigma puella Simon, 1870 (Wunderlich, 1992a: 429)
Nigma lobensis (Schmidt, 1976, T from Dictyna) = Nigma puella Simon, 1870 (Wunderlich, 1992a: 429)
Nigma orientalis (Kulczyński, 1895, T from Dictyna) = Nigma flavescens Walckenaer, 1830 (Lehtinen, 1967: 252)
Nigma palmarum (Simon, 1885) = Nigma conducens O. Pickard-Cambridge, 1876 (Simon, 1907e: 1, sub Dictyna)
Nigma vulnerata (Simon, 1914) = Nigma walckenaeri Roewer, 1951 (Lecigne et al., 2022: 28)