Rhyparochromus micropterus Curtis, 1836: text to pl. 612. STS: Great Britain, Hampshire, nr Heron Count; MVMA?
Pachymerus subaeneus Herrich-Schaeffer, 1840b: 36 (syn. Puton, 1875a: 24). STS: male, female, Germany, Bayern (Erlangen) and Sachsen (Stadt Wehlen); lost.
Pachymerus hirsutulus Scholtz, 1847: 147 (syn. Douglas & Scott, 1865: 208). STS: Poland, Silesia; lost.
Pachymerus gracilis Boheman, 1852c: 53 (syn. Fieber, 1861a: 388, with hirsutulus). ST(S): male, Sweden, Småland, Anneberg; NHRS?
Pterotmetus menetriesii Kuschakewitsch, 1854: 23 (syn. Puton, 1875a: 24). LT (Péricart, 1998b: 129): male, Germany (south); ZMAS.
Pachymerus staphyliniformis (non Schilling, 1829): Graaf et al., 1860: 177. Misidentification (see J.A. Slater, 1964a: 1452).
Pachymerus hemipterus (non Schilling, 1829): Flor, 1860: 261. Misidentification (see Fieber, 1863: 55).
Macrodema lathrobioides Fieber, 1861a: 180. Nomen nudum (published in synonymy).
Macrodema nigra Signoret, 1865: 123 (syn. Puton, 1874a: 226). ST(S): France; nr Paris; lost?