type Mysmena quadrimaculata Banks, 1896; gender feminine

In synonymy:
Paratheridula arcadica (Gertsch & Archer, 1942, T from Allotheridion) = Paratheridula perniciosa (Keyserling, 1886) (Levi, 1957a: 21, sub Mysmena quadrimaculata).
Paratheridula quadrimaculata (Banks, 1896) = Paratheridula perniciosa (Keyserling, 1886) (Levi, 1966b: 130).

Theridion perniciosum Keyserling, 1886b: 233, pl. 20, f. 288 (Dmf).
Mysmena 4-maculata Banks, 1896e: 66 (Df) [urn:lsid:nmbe.ch:spidersp:062855].
Theridion quadrimaculatum Bryant, 1933a: 173, f. 4 (Dm, T from Mysmena).
Theridion arcadicum Gertsch & Archer, 1942: 4, f. 24 (Df) [urn:lsid:nmbe.ch:spidersp:062854].
Allotheridion arcadicum Archer, 1950: 20 (T from Theridion).
Mysmena quadrimaculata Levi, 1957a: 21 (S of Allotheridion arcadicum).
Paratheridula quadrimaculata Levi, 1957d: 106, f. 1-6 (mf, T from Theridion).
Paratheridula perniciosa Levi, 1961: 5, f. 3 (m, T from Theridion).
Paratheridula perniciosa Levi & Levi, 1962: 42, f. 67-68 (m).
Paratheridula perniciosa Levi, 1966b: 128 (S of Paratheridula quadrimaculata).
Paratheridula perniciosa Levi, 1967c: 176, f. 1-4 (mf).
Paratheridula perniciosa Levi & Randolph, 1975: 39, f. 61-63 (mf).
Paratheridula perniciosa Gruia, 1977: 159, f. 1 (f).
Paratheridula quadrimaculata Heimer, 1982: 42, f. 9 (m).
Paratheridula perniciosa Roth, 1982: 47-11, f. 61-63 (mf).
Paratheridula perniciosa Roth, 1985: B43-10, f. 61-63 (mf).
Paratheridula perniciosa Roth, 1994: 184, f. 62-63 (mf).
Paratheridula perniciosa Vanuytven, 2021: 42, 222, f. A.30c, B.227a-b (m).