Capsus plagiatus Herrich-Schaeffer, 1835b: 50, 1835a: 10. HT: female, Germany, Passau; lost.
Phytocoris institatus Fieber, 1836: 104 (syn. Fieber, 1861: 316). STS: Czech Republic (Bohemia) and Germany (Bayern).
Phylus plagiatus var. pallidus Prohaska, 1923: 73 (junior secondary homonym of Cimex pallidus Gmelin, 1790). STS: Austria, Carinthia, Promeggan nr Luggau and/or Möderndorf.
Phylus plagiatus f. tricolor Stichel, 1933: 259. For var. α in Reuter, 1878a: 163.
Phylus plagiatus f. interposita Stichel, 1933: 259. For var. β in Reuter, 1878a: 163.
Phylus plagiatus f. ochracea Stichel, 1933: 259. For var. γ in Reuter, 1881a: 160. ST(S): Austria (Austria inferiore).