Lygaeus unifasciatus Fabricius, 1794: 178. ST(S): Denmark, Hafnia [= Copenhagen]; ZMUC (1 ST).
?Cimex tomentosus Villers, 1789: 528 (syn. Reuter, 1888a: 274). ST(S): France (south); lost.
Miris semiflavus Wolff, 1804: 154 (syn. Fallén, 1807: 80). STS: male, female, EU; lost.
?Phytocoris lateralis Hahn, 1834: 85, fig. 169 (junior primary homonym of Phytocoris lateralis Fallén, 1826) (as species under the figure, misprinted as laeratis and downgraded to var. of semiflavus in text). ST(S): Germany, Nürnberg; lost.
?Phytocoris marginatus Hahn, 1834: 85, fig. 170 (as species under the figure, downgraded to var. of semiflavus in text). ST(S): Germany, Nürnberg; lost.
?Phytocoris? galii Gistel, 1857: 58 (syn. Kerzhner, 1993b: 99). STS: Germany; lost.
Poeciloscytus unifasciatus f. transita Stichel, 1930: 191. For var. α in Reuter, 1896c: 55.
Poeciloscytus unifasciatus f. disjuncta Wagner, 1951r: 5. STS: male, female, Germany, Bavaria (Coburg), Hessen (Taunus) and Rheinland-Pfalz (Mainz); ZMUH (4 specimens labelled PT, see J. Ribes & Goula, 1986: 262).