Lygaeus thoracicus Fallén, 1807: 81. STS: male, female, Sweden, Esperöd; MZLU (1 ST).
?Cimex prothyris Villers, 1789: 529 (syn. Reuter, 1888a: 312). ST(S): France, Lugdunum [= Lyon]; lost.
Harpocera burmeisteri Curtis, 1838: 709 (syn. Herrich-Schaeffer, 1853a: 14). STS: male, female, Great Britain (Surrey (Coomb-wood), Southgate (Arno's Cave), London, and nr Oxford); MVMA?
Capsus curvipes Meyer-Dür, 1843: 98 (syn. Scholtz, 1847: 126). LT (Kerzhner, 1996b: 268): male, Switzerland, apparently Burgdorf; AMNH.
Capsus antennatus Mulsant & Rey, 1852: 130 (junior primary homonym of Capsus antennatus Boheman, 1852; syn. Fieber, 1861a: 297). STS: France, Departament du Rhône.
Capsus picticornis Mulsant & Rey, 1852: 110 (syn. Puton, 1869a: 27). ST(S): Switzerland.
Phytocoris circumflexus A. Costa, 1853: 40 (36) (syn. Signoret, 1854: liv). HT (as LT by Carapezza et al., 1995: 287): female, Italy, region of Naples; ZIUN.
Harpocera thoracica var. ruficollis Westhoff, 1881a: 66. HT: female, Germany, Oeding; LMND?
Harpocera thoracica f. confusa Stichel, 1933: 257. For var. γ in Reuter, 1878a: 169.
Harpocera thoracica f. nigra Stichel, 1933: 257. For var. α in Reuter, 1878a: 169. HT: female, Greece.
Harpocera thoracica f. grisescens Stichel, 1933: 257. For var. β in Reuter, 1878a: 169. STS: female, Greece.