Pachymerus pallipes Herrich-Schaeffer, 1834a: 2. STS: Germany; lost.
Pachymerus tessella A. Costa, 1853: 23 (syn. Horváth, 1929d: 325). STS: Italy, Naples, Sicily; lost?
Acompus opacus Priesner, 1927: 60 (syn. Horváth, 1929d: 326). LT (see Péricart, 1998c: 10, as HT): female (macr.), Austria, Linz; OLML.
Acompus opacus var. laetipes Ribaut, 1929b: 110 (syn. Stichel, 1959b: 330). LT (Péricart, 1997b: 484): male (brach.), France, Dept Cantal, Murat; MNHN.
Acompus orientalis Horváth, 1929d: 325 (syn. Josifov, 1987b: 5). LT (Scudder, 1970a: 203): female, Turkey, Asia Minor; HNHM.
Acompus ibericus Lindberg, 1932a: 35 (syn. Stichel, 1959b: 330). HT: male, Spain, Algeciras; MZHF.