Plinthisus (Plinthisomus) minutissimus Fieber, 1864b: 213. ST(S): female, France, Hyères; lost?
Plinthisus minutissimus var. meridionalis Mancini, 1935b: 8. HT (see Péricart, 1998c: 7): male, Italy, Pantelleria Is.; MCSN.
Plinthisus (Isioscytus) bicolor (non Rey, 1888): Wagner, 1963t: 120. Misidentification (see Péricart & Ribes, 1994: 248).