Pachymerus angustulus Boheman, 1852c: 56. LT (Péricart, 1994c: 413): male, Sweden, Småland, Anneberg; NHRS.
Pachymerus oculatus Flor, 1860: 257 (junior primary homonym of Pachymerus oculatus Germar, 1838; syn. Reuter, 1881d: 88). HT: female, Latvia, Segewold [= Sigulda]; IZBE?
Pterotmetus (Ischnocoris) hemipterus (non Schilling, 1829): Stål, 1862b: 215. Misidentification (see Reuter, 1881d: 87).
Ischnocoris hemipterus var. nigricans Puton, 1871a: 417 (syn. Puton, 1886a: 26). LT (Scudder, 1967b: 155): female, France, Corsica; MNHN.
Ischnocoris intermedius Horváth, 1880c: 92 (syn. Reuter, 1881d: 88). LT (Péricart, 1997b: 486): female, Begium, Calmthout; HNHM.