In synonymy:
Paramyrmecion Bryant, 1940 = Litopyllus Chamberlin, 1922 (Platnick & Shadab, 1980a: 16)

type Litopyllus temporarius Chamberlin, 1922; gender masculine

N.B.: considered a senior synonym of Paramyrmecion Bryant, 1940: 394 [urn:lsid:nmbe.ch:spidergen:05696] (type P. cubanum Bryant, 1940) by Platnick & Shadab, 1980a: 16.

Transferred to other genera:
Litopyllus inconspicuus Bryant, 1940 -- see Cubanopyllus
Litopyllus paludis Chamberlin & Gertsch, 1940 -- see Synaphosus

In synonymy:
Litopyllus ambiguus Fox, 1938 = Litopyllus temporarius Chamberlin, 1922 (Platnick & Shadab, 1980a: 17).
Litopyllus barrowsi Roewer, 1951 = Litopyllus temporarius Chamberlin, 1922 (Platnick & Shadab, 1980a: 18).
Litopyllus liber Chamberlin & Gertsch, 1940 = Litopyllus temporarius Chamberlin, 1922 (Platnick & Shadab, 1980a: 17).
Litopyllus luteus (Barrows, 1919) = Litopyllus temporarius Chamberlin, 1922 (Platnick & Shadab, 1980a: 17).
Litopyllus rupicolens Chamberlin, 1922 = Litopyllus temporarius Chamberlin, 1922 (Ubick & Roth, 1973a: 5).

Paramyrmecion cubanum Bryant, 1940: 395, pl. 13, f. 173, 175 (Df).
Litopyllus cubanus Platnick & Shadab, 1980a: 21, f. 36-39 (Dm, f, T from Paramyrmecion).

Nodocion realisticus Chamberlin, 1924b: 613, f. 49 (Df).
Litopyllus realisticus Platnick & Shadab, 1980a: 20, f. 34-35 (f, T from Nodocion).

Prosthesima lutea Barrows, 1919b: 356, pl. 15, f. 5 (Dm; preoccupied by F. O. Pickard-Cambridge, 1899, see Urozelotes rusticus) [urn:lsid:nmbe.ch:spidersp:058973].
Litopyllus temporarius Chamberlin, 1922: 155 (Dm).
Litopyllus rupicolens Chamberlin, 1922: 155 (Df) [urn:lsid:nmbe.ch:spidersp:058972].
Litopyllus luteus Chamberlin, 1922: 155.
Litopyllus ambiguus Fox, 1938a: 235, pl. 1, f. 4 (Dm) [urn:lsid:nmbe.ch:spidersp:058970].
Litopyllus liber Chamberlin & Gertsch, 1940: 2, f. 11-12 (Dmf) [urn:lsid:nmbe.ch:spidersp:058971].
Litopyllus rupicolens Muma, 1944: 10.
Litopyllus rupicolens Kaston, 1948: 365, f. 1268-1272 (mf).
Litopyllus barrowsi Roewer, 1951: 443 (replacement name) [urn:lsid:nmbe.ch:spidersp:058974].
Litopyllus temporarius Ubick & Roth, 1973a: 5 (S of Litopyllus rupicolens).
Litopyllus temporarius Platnick & Shadab, 1980a: 17, f. 27-30 (mf, S of Litopyllus ambiguus, L. barrowsi, L. liber and L. luteus).
Litopyllus temporarius Heiss & Allen, 1986: 17, f. 30-31 (mf).
Litopyllus temporarius Platnick & Dondale, 1992: 225, f. 15, 338-341 (mf).
Litopyllus temporarius Murphy, 2007: 50, f. 360-361 (mf).
Litopyllus temporarius Azevedo, Griswold & Santos, 2018a: 679, f. 2B, 6B (mf).
Litopyllus temporarius Azevedo, Griswold & Santos, 2018b: 607, f. 7f,i, 21f, S6f (m).