Peritrechus meridionalis Puton, 1877d: 117. LT (Scudder, 1967b: 156): female, France, Hérault, Cette [= Sète]; MNHN.
Peritrechus angusticollis (non R.F. Sahlberg, 1848): Horváth, 1878a: 78. Misidentification (see Horváth, 1886a: 250).
Peritrechus meridionalis var. fuscatus Ferrari, 1888b: 557. HT: male, Italy, Sardinia, Cagliari; MCSN.
Peritrechus ambiguus Horváth, 1888a: 175 (syn. Josifov, 1987b: 7). LT (Scudder, 1970a: 198): female, Hungary, Kalocsa; MZHF.
?Peritrechus ambiguus var. pallipes Montandon, 1889: 290 (syn. Péricart, 1999c: 210, suspected). HT: Romania, Bucuresti; MGAB.