N.B.: considered a senior synonym of Hadrotarsidae Thorell, 1881: 190 (sub Hadrotarsoidae, removed from the synonymy of Oonopidae by Roewer, 1963a: 122, rejecting Roewer, 1942a: 287) by Forster, Platnick & Coddington, 1990: 111 (per Wunderlich, 1978a: 25 and Wunderlich, 1986: 95, rejecting Baert, 1984a: 615 and Davies, 1985: 67), who recognized an expanded Hadrotarsinae as well as a separate subfamily Spintharinae Simon, 1894a: 512 (sub Spinthareae); the subfamily Theonoeinae Simon, 1894a: 586 (sub Theonoeae) (synonym Pholcommatinae Simon, 1894a: 589, sub Pholcommateae), which include Theonoe Simon, 1881, Carniella Thaler & Steinberger, 1988, Robertus O. Pickard-Cambridge, 1879 and Pholcomma Thorell, 1869, is circumscribed by Eskov & Marusik, 2024: 51; Eskov & Marusik, 2024: 52 also mention the subfamilies Argyrodinae Simon, 1881a: 14 (sub Argyrodini) and Latrodectinae Petrunkevitch, 1928: 117 (junior synyonym of Dipoeninae Simon, 1894a: 561, sub Dipoeneae).
In synonymy:
Hildbolda Keyserling, 1884 = Thwaitesia O. Pickard-Cambridge, 1881 (Simon, 1894a: 519)
Topo Exline, 1950 = Thwaitesia O. Pickard-Cambridge, 1881 (Levi & Levi, 1962: 31)
Transferred to other genera:
Thwaitesia argyrodiformis (Yaginuma, 1952) -- see Chrysso
Thwaitesia aureosignata (Lenz, 1891) -- see Leucauge
In synonymy:
Thwaitesia adamantifera Keyserling, 1884 = Thwaitesia affinis O. Pickard-Cambridge, 1882 (Levi, 1963e: 231)
Thwaitesia shimenensis (Tang, Yin & Peng, 2003, T from Chrysso = Thwaitesia glabicauda Zhu, 1998 (Zhu & Zhang, 2011: 112)
Nomen dubium:
Thwaitesia conifera (Blackwall, 1862b: 429, f, Brazil, originally in Theridion) -- Levi, 1963c: 493