Capsus infusus Herrich-Schaeffer, 1837: 30. STS: male, female, Germany, Regensburg (and other localities?); lost.
Phytocoris validicornis Boheman, 1852b: 66 (syn. Kirschbaum, 1856: 171, 215). STS: male, female, Sweden, Carlsberg nr Holmia [= Stockholm]; NHRS.
Megacoelum infusum f. reuteri Stichel, 1930: 160. For var. α [not β!] in Reuter, 1896c: 233.
Megacoelum infusum f. infuscata Stichel, 1957: 643. For var. γ in Reuter, 1896c: 233.