Lygaeus molliculus Fallén, 1807: 77. STS: male, female, Sweden, Esperöd; MZLU.
Capsus ochroleucus Kirschbaum, 1856: 248, 313 (syn. Fieber, 1861a: 321; Wagner, 1943c: 33). STS: male, female, Germany, Wiesbaden and Mombach; MWNH.
Macrocoleus hardyi Bold, 1872: 358 (syn. Douglas & Scott, 1875a: 185). Nomen nudum.
Megalocoleus ochroleucus (non Kirschbaum, 1856): Reuter, 1879e: 228. Misidentification (see Wagner, 1958f: 63).
Megalocoleus molliculus var. maculicollis J. Sahlberg, 1920: 158. LT (Kerzhner, 1997d: 118): male, Finland, prov. Åbo [= Turku]., parish Bjerno, Koskis bruk; MZHF.
Megalocoleus molliculus f. unicolor Stichel, 1956b: 246. Apparently for var. β in Reuter, 1879e: 226.
Megalocoleus confusus Wagner, 1958f: 62 (syn. Matocq, 2004c: 89). HT: male, Austria, Bisamberg nr Vienna; ZMUH.
Megalocoleus pericarti Linnavuori, 1970a: 96 (syn. Matocq, 2004c: 89). HT: male, France, Corsica, Ghizonaccia; NMWC.