Lygaeus brevipennis Latreille, 1807: 123. ST(S): brach., France; lost?
Pachymerus bidentulus Herrich-Schaeffer, 1840b: 31 (syn. Horváth, 1875b: 60). ST(S): macr., Germany, Erlangen; lost.
Pachymerus bidenticulatus A. Costa, 1853: 27 (syn. Puton, 1884a: 149). LT (Péricart in Carapezza et al., 1995: 284): female (macr.), Italy, Naples; ZIUN.
Plinthisus longipennis Ferrari, 1874: 157 (syn. Horváth, 1876b: 735). STS: Italy, Piemonte, Stazzano, Serravalle Scrivia; MCSN?
Plinthisus autrani Horváth, 1898b: 152 (syn. Costas et al., 2005: 34). LT (Scudder, 1970a: 198): male, Algeria, Msila forest; HNHM.
Plinthisus breviceps Blöte, 1926: 110. Lapsus.
Plinthisus maderi Lindberg, 1924b: 40 (syn. Péricart, 1997b: 483). LT (Péricart, 1997a: 65): male (brach.), Austria, Hainburg; MZHF.
Plinthisus (Plinthisus) pseudoconvexus Wagner, 1963t: 146 (syn. Péricart, 1997b: 483). HT: male (brach.), Italy, Sardinia, Lanusei; ZMUH.