Capsus rufifrons Fallén, 1807: 105. STS: female, Sweden; MZLU (1 ST).
?Cimex leucocephalus (non Linnaeus, 1758): Schrank, 1801: 78. Misidentification (see Reuter, 1888a: 308).
Byrsoptera erythrocephala Spinola, 1837: 191 (syn. Herrich-Schaeffer, 1853b: 39). HT: female, Italy (north); lost?
Malthacus caricis (non Fallén, 1807): Fieber, 1858: 322; 1861: 313. Misidentification (see J. Sahlberg, 1868a: 179).
Byrsoptera rufifrons f. nigriceps Stichel, 1933: 258.